Electronic device and control method thereof

Abstract

This dryer comprises: a drum for accommodating an object to be dried; a hot air supply device for supplying hot air into the drum; a motor used to rotate the drum; a power supply device for supplying power to the motor; and at least one processor for controlling the motor. The power supply device comprises: a power terminal unit for receiving AC power including a ground wire through a first input terminal and a second input terminal; an EMI filter for removing noise included in the AC power; and a ground terminal including the ground wire connected to the power supply device. The EMI filter comprises: an X capacitor unit including a first capacitor: a first common mode filter including a first core, a first inductor wound around the first core, and a second inductor wound around the first core; a Y capacitor unit including a second capacitor and a third capacitor connected in series; and a second common mode filter including a second core, a third inductor wound around the second core, a fourth capacitor connected in parallel to the third inductor, a fourth inductor wound around the second core, and a fifth capacitor connected in parallel to the fourth inductor.

Description

Electronic device and method of controlling the same

[0001] The present disclosure relates to an electronic device and a control method thereof, and more particularly, to an electronic device including a filter for removing noise and a control method thereof.

[0002] Electro-Magnetic Interference (EMI) filters can be used to remove noise signals generated by home appliances.

[0003] EMI can refer to radiated or conducted electromagnetic waves that interfere with the functioning of electronic circuits. EMI can also refer to noise, which can refer to unwanted electromagnetic waves.

[0004] EMI filters can filter out noise signals generated when power is supplied to home appliances. Using EMI filters ensures a stable power supply to home appliances. EMI filters can also be described as noise filters.

[0005] EMI filters can block, absorb, or bypass noise generated by home appliances.

[0006] Electrical noise signals can take various forms. They can include at least one of a common-mode current and a differential-mode current. Common-mode currents can also exhibit various current flows.

[0007] EMI filters can be designed to address conducted emissions (CE). EMI filters can eliminate noise related to a predetermined flow. However, EMI filters may not be able to eliminate noise related to disturbance power (DP).

[0008] A common mode filter may be used to filter common mode current, and a differential mode filter may be used to filter differential mode current.

[0009] In a common-mode filter, increasing the impedance can increase the interference current limiting performance at a specific frequency. This can be achieved by increasing the magnetic permeability or increasing the number of turns in the winding, thereby increasing the inductance.

[0010] However, as the inductance increases, the parasitic stray capacitance (parasitic resistance, parasitic capacitor) between the windings may change. As the parasitic stray capacitance changes, the self-resonant frequency of the filter decreases, so the impedance may increase only in the band below the self-resonant frequency and decrease in the band above the self-resonant frequency.

[0011] If it is difficult to increase the magnetic permeability (e.g., by replacing the inductor), increasing the impedance may be difficult.

[0012] If it is difficult to increase the number of turns of the winding (e.g., due to insufficient core size), increasing the impedance may be difficult.

[0013] If it is difficult to increase the size of the magnetic material, it may be difficult to increase the impedance.

[0014] Changing the magnetic material used in the common mode filter may cause difficulties in standardizing / commonizing parts.

[0015] The present disclosure is designed to improve the above-described problem, and an object of the present disclosure is to provide an electronic device and a control method thereof that change impedance by placing an additional capacitor in a common mode filter included in an EMI filter.

[0016] According to one embodiment, a dryer includes a drum for accommodating a drying object, a hot air supply device for supplying hot air to the inside of the drum, a motor used to rotate the drum, a power supply device for supplying power to the motor, and at least one processor for controlling the motor, wherein the power supply device includes a power terminal for receiving AC power including a ground line through a first input terminal and a second input terminal, an EMI filter for removing noise included in the AC power, and a ground terminal for being connected to the power supply device, wherein the EMI filter includes an X capacitor unit including a first capacitor, a first core, a first inductor wound around the first core, a first common mode filter including a second inductor wound around the first core, a Y capacitor unit including a second capacitor and a third capacitor connected in series, and a second common mode filter including a second core, a third inductor wound around the second core, a fourth capacitor connected in parallel to the third inductor, a fourth inductor wound around the second core, and a fifth capacitor connected in parallel to the fourth inductor.

[0017] The at least one processor can control the hot air supply device by supplying AC power to the motor from which the noise has been removed through the EMI filter.

[0018] The power supply may include a first output terminal and a second output terminal connected to the second common mode filter.

[0019] One end of the first inductor may be commonly connected to one end of the first capacitor and the first input terminal, and the other end of the first inductor may be commonly connected to one end of the second capacitor, one end of the fourth capacitor, and one end of the third inductor.

[0020] One end of the second inductor may be commonly connected to the other end of the first capacitor and the second input terminal, and the other end of the second inductor may be commonly connected to the other end of the third capacitor, one end of the fifth capacitor, and one end of the fourth inductor.

[0021] The other end of the third inductor may be connected to the other end of the fourth capacitor and the first output terminal, and the other end of the fourth inductor may be connected to the other end of the fifth capacitor and the second output terminal.

[0022] The first inductor and the second inductor may be connected in series, and the third inductor and the fourth inductor may be connected in series.

[0023] The first core is made of a magnetic material, the first inductor and the second inductor can wrap around the first core in the same direction, the second core is made of a magnetic material, and the third inductor and the fourth inductor can wrap around the second core in the same direction.

[0024] The above ground terminal can be commonly connected to the other terminal of the second capacitor and one terminal of the third capacitor.

[0025] The above motor is a BLDC (Brushless Direct Current) motor and can receive power that has passed through the EMI filter.

[0026] The above dryer may further include a substrate on which the power terminal portion and the EMI filter are arranged.

[0027] The X capacitor unit is a first X capacitor unit, and the EMI filter further includes a second X capacitor unit including a sixth capacitor, and the second X capacitor unit can be connected in parallel to the first X capacitor unit, the first common mode filter, the Y capacitor unit, and the second common mode filter.

[0028] One end of the sixth capacitor may be commonly connected to the other end of the first inductor, one end of the second capacitor, one end of the fourth capacitor, and one end of the third inductor, and the other end of the sixth capacitor may be commonly connected to the other end of the second inductor, the other end of the third capacitor, one end of the fifth capacitor, and one end of the fourth inductor.

[0029] The EMI filter includes a differential mode filter including a fifth inductor and a sixth inductor, and the differential mode filter can be connected in parallel to the first X capacitor section, the first common mode filter, the Y capacitor section, and the second common mode filter.

[0030] One end of the fifth inductor is commonly connected to the other end of the fourth capacitor and the other end of the third inductor, and the other end of the fifth inductor can be connected to the first output terminal.

[0031] One end of the sixth inductor is commonly connected to the other end of the fifth capacitor and the other end of the fourth inductor, and the other end of the sixth inductor can be connected to the second output terminal.

[0032] According to one embodiment, a home appliance includes a motor, a power supply for supplying power to the motor, and at least one processor for controlling the motor, wherein the power supply includes a power terminal for receiving AC power including a ground line through a first input terminal and a second input terminal, an EMI filter for removing noise included in the AC power, and a ground terminal including a ground line connected to the power supply, wherein the EMI filter includes an X capacitor unit including a first capacitor, a first common mode filter including a first core, a first inductor wound around the first core, and a second inductor wound around the first core, a Y capacitor unit including a second capacitor and a third capacitor connected in series, and a second common mode filter including a second core, a third inductor wound around the second core, a fourth capacitor connected in parallel to the third inductor, a fourth inductor wound around the second core, and a fifth capacitor connected in parallel to the fourth inductor.

[0033] The above appliance may be either a dryer or an air conditioner.

[0034] The power supply may include a first output terminal and a second output terminal connected to the second common mode filter.

[0035] One end of the first inductor may be commonly connected to one end of the first capacitor and the first input terminal, and the other end of the first inductor may be commonly connected to one end of the second capacitor, one end of the fourth capacitor, and one end of the third inductor.

[0036] One end of the second inductor may be commonly connected to the other end of the first capacitor and the second input terminal, and the other end of the second inductor may be commonly connected to the other end of the third capacitor, one end of the fifth capacitor, and one end of the fourth inductor.

[0037] FIG. 1 is a block diagram illustrating an electronic device according to one embodiment.

[0038] FIG. 2 is a drawing for explaining an electronic device according to one embodiment.

[0039] FIG. 3 is a block diagram illustrating an electronic device according to one embodiment.

[0040] Figure 4 is a drawing for explaining a power supply device according to one embodiment.

[0041] FIG. 5 is a drawing for explaining a power supply device according to one embodiment.

[0042] Figure 6 is a drawing for explaining a power supply device according to one embodiment.

[0043] Figure 7 is a drawing for explaining a power supply device according to one embodiment.

[0044] Figure 8 is a drawing for explaining a power supply device according to one embodiment.

[0045] FIG. 9 is a drawing for explaining a power supply device according to one embodiment.

[0046] FIG. 10 is a drawing for explaining a power supply device according to one embodiment.

[0047] FIG. 11 is a drawing for explaining a power supply device according to one embodiment.

[0048] Figure 12 is a drawing for explaining a power supply device according to one embodiment.

[0049] FIG. 13 is a drawing for explaining a power supply device according to one embodiment.

[0050] Figure 14 is a diagram for explaining the change in impedance according to the type of inductor.

[0051] Figure 15 is a drawing for explaining the operation of determining the capacity of a capacitor additionally placed to increase impedance.

[0052] Figure 16 is a diagram for explaining the change in impedance according to the additionally placed capacitor.

[0053] Fig. 17 is a drawing for explaining a second common mode filter (142).

[0054] Fig. 18 is a drawing for explaining the first common mode filter (130).

[0055] Figure 19 is a diagram illustrating a device under test (EUT) and a line impedance stabilization network (LISN).

[0056] Figure 20 is a diagram for explaining a line impedance stabilization network.

[0057] Figure 21 is a diagram for explaining the interference current flowing in the test target device and the line impedance stabilization network.

[0058] FIG. 22 is a diagram for explaining an EMI filter and interference current according to one embodiment.

[0059] FIG. 23 is a diagram for explaining an EMI filter and interference current according to one embodiment.

[0060] Hereinafter, the present disclosure will be described in detail with reference to the attached drawings.

[0061] The terms used in the embodiments of this disclosure have been selected from widely used, current terms, taking into account the functions of this disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant disclosure. Therefore, the terms used in this disclosure should not be defined simply as names of terms, but rather based on the meanings of the terms and the overall content of this disclosure.

[0062] In this specification, expressions such as “has,” “can have,” “includes,” or “may include” indicate the presence of a feature (e.g., a number, function, operation, or component such as a part), and do not exclude the presence of additional features.

[0063] The expression "at least one of A and / or B" should be understood to mean either "A" or "B" or "A and B".

[0064] As used herein, the expressions “first,” “second,” “first,” or “second,” etc., may describe various components, regardless of order and / or importance, and are only used to distinguish one component from another, but do not limit the components.

[0065] When it is said that a component (e.g., a first component) is “(operatively or communicatively) coupled with / to” or “connected to” another component (e.g., a second component), it should be understood that the component may be directly coupled to the other component, or may be connected through another component (e.g., a third component).

[0066] Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "consist of" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0067] In the present disclosure, a "module" or "part" performs at least one function or operation and may be implemented as hardware or software, or as a combination of hardware and software. Furthermore, multiple "modules" or multiple "parts" may be integrated into at least one module and implemented as at least one processor (not shown), excluding any "modules" or "parts" that need to be implemented as specific hardware.

[0068] In this specification, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

[0069] An embodiment of the present disclosure will be described in more detail with reference to the attached drawings below.

[0070] FIG. 1 is a block diagram illustrating an electronic device according to one embodiment.

[0071] Referring to FIG. 1, the electronic device (100) may include at least one of a motor (105), a power supply (110) that supplies power to the motor (105), or at least one processor (150) that controls the motor (105).

[0072] The motor (105) can generate power to drive the electronic device (100). The motor (105) can generate noise.

[0073] The EMI filter (140) can absorb or remove noise.

[0074] At least one processor (150) can perform the overall operations performed in the electronic device (100).

[0075] The power supply (110) may include an EMI filter (140) that removes noise included in an external power source (e.g., AC power).

[0076] Noise can be generated when external power is supplied. Noise can be unwanted electromagnetic waves generated when external power is supplied. Noise can be described as a noise signal.

[0077] The electronic device (100) may include various home appliances driven by a motor (105). As an example, the electronic device (100) may be implemented as a dryer. A specific configuration related to the dryer is described in FIG. 3.

[0078] The power supply unit (110) may include at least one of a power terminal unit (120) that receives AC power including a ground wire through a first input terminal (Li) and a second input terminal (Ni), an EMI filter (140) that removes noise included in the AC power, or a ground terminal of the power supply unit (110).

[0079] The EMI filter (140) may include at least one of an X capacitor section (141), a first common mode filter (142), a Y capacitor section (143), or a second common mode filter (144).

[0080] The X capacitor section (141) may include a first capacitor (C1).

[0081] The first common mode filter (142) may include a first core, a first inductor (L4) wound around the first core, and a second inductor (L5) wound around the first core.

[0082] The Y capacitor section (143) may include a second capacitor (C2) and a third capacitor (C3) connected in series.

[0083] The second common mode filter (144) may include a second core, a third inductor (L6) wound around the second core, a fourth capacitor (C4) connected in parallel to the third inductor (L6), a fourth inductor (L7) wound around the second core, and a fifth capacitor (C5) connected in parallel to the fourth inductor (L7).

[0084] The first inductor (L4) may be identical to the fourth inductor (L4) of Fig. 9. The second inductor (L5) may be identical to the fifth inductor (L5) of Fig. 9. The third inductor (L6) may be identical to the sixth inductor (L6) of Fig. 9. The fourth inductor (L7) may be identical to the seventh inductor (L7). The ordinal numbers used to describe the inductors may change depending on the order of description.

[0085] The impedance of the second common mode filter (144) can be increased through a fourth capacitor (C4) connected in parallel to the third inductor (L6) and a fifth capacitor (C5) connected in parallel to the fourth inductor (L7). The related effects are described in FIGS. 15 and 16. The fourth capacitor (C4) and the fifth capacitor (C5) can be described as a target capacitor or an additional capacitor.

[0086] A specific description related to the EMI filter (140) including the X capacitor section (141), the first common mode filter (142), the Y capacitor section (143), and the second common mode filter (144) is described in FIG. 9.

[0087] The external power source (e.g., AC power) may be a single-phase AC power source.

[0088] A common mode filter can be described as a common mode choke, a common mode coil, a common mode choke coil, a noise filter, an inductor, etc.

[0089] The first common mode filter (142) and the second common mode filter (144) can remove common mode current, which is noise generated in the power supply.

[0090] The dryer may further include a drum (106) and a hot air supply device (108) for supplying hot air to the inside of the drum (106).

[0091] At least one processor (150) can control the hot air supply device (108) by supplying AC power to the motor (105) with noise removed through an EMI filter (140).

[0092] The power supply (110) may include a first output terminal (Lo) and a second output terminal (No) connected to a second common mode filter (144).

[0093] One end (i18) of the first inductor (L4) can be commonly connected to one end (i17) of the first capacitor (C1) and the first input terminal (Li).

[0094] The other end (o18) of the first inductor (L4) can be commonly connected to one end (i20) of the second capacitor (C2), one end (i24) of the fourth capacitor (C4), and one end (i22) of the third inductor (L6).

[0095] One end (i19) of the second inductor (L5) can be commonly connected to the other end (o17) of the first capacitor (C1) and the second input terminal (Ni).

[0096] The other end (o19) of the second inductor (L5) can be commonly connected to the other end (o21) of the third capacitor (C3), one end (i25) of the fifth capacitor (C5), and one end (i23) of the fourth inductor (L7).

[0097] The other terminal (o22) of the third inductor (L6) can be connected to the other terminal (o24) of the fourth capacitor (C4) and the first output terminal (Lo).

[0098] The other terminal (o23) of the fourth inductor (L7) can be connected to the other terminal (o25) of the fifth capacitor (C5) and the second output terminal (No).

[0099] The first inductor (L4) and the second inductor (L5) can be connected in series. The third inductor (L6) and the fourth inductor (L7) can be connected in series.

[0100] The first core is made of a magnetic material, and the first inductor (L4) and the second inductor (L5) can be wrapped around the first core in the same direction.

[0101] The second core is made of a magnetic material, and the third inductor (L6) and the fourth inductor (L7) can be wrapped around the second core in the same direction.

[0102] The ground terminal (Eo=Ei) can be commonly connected to the other terminal (o20) of the second capacitor (C2) and one terminal (i21) of the third capacitor (C3).

[0103] The motor (105) is a BLDC (Brushless Direct Current) motor (105) and can receive power that has passed through an EMI filter (140).

[0104] The dryer may further include a substrate on which a power terminal (120) and an EMI filter (140) are arranged.

[0105] The X capacitor unit (141) is a first X capacitor unit (141), and the EMI filter (140) may further include a second X capacitor unit (145) including a sixth capacitor (C6).

[0106] A specific description related to the second X capacitor unit (145) is described in Fig. 11.

[0107] The second X capacitor unit (145) can be connected in parallel to the first X capacitor unit (141), the first common mode filter (142), the Y capacitor unit (143), and the second common mode filter (144).

[0108] One end (i26) of the sixth capacitor (C6) can be commonly connected to the other end (o18) of the first inductor (L4), one end (i20) of the second capacitor (C2), one end (i24) of the fourth capacitor (C4), and one end (i22) of the third inductor (L6).

[0109] The other end (o26) of the sixth capacitor (C6) can be commonly connected to the other end (o19) of the second inductor (L5), the other end (o21) of the third capacitor (C3), one end (i25) of the fifth capacitor (C5), and one end (i23) of the fourth inductor (L7).

[0110] The EMI filter (140) may include a differential mode filter (146) including a fifth inductor (L8) and a sixth inductor (L9).

[0111] The differential mode filter (146) can be connected in parallel to the first X capacitor unit (141), the first common mode filter (142), the Y capacitor unit (143), and the second common mode filter (144).

[0112] A specific description related to the differential mode filter (146) is described in Fig. 13.

[0113] One end (i27) of the fifth inductor (L8) can be commonly connected to the other end (o24) of the fourth capacitor (C4) and the other end (o22) of the third inductor (L6).

[0114] The other terminal (o27) of the fifth inductor (L8) can be connected to the first output terminal (Lo).

[0115] One end (i28) of the sixth inductor (L9) can be commonly connected to the other end (o25) of the fifth capacitor (C5) and the other end (o23) of the fourth inductor (L7).

[0116] The other end (o28) of the sixth inductor (L9) can be connected to the second output terminal (No).

[0117] The appliance may include at least one of a motor (105), a power supply (110) for supplying power to the motor (105), or at least one processor (150) for controlling the motor (105).

[0118] The power supply unit (110) may include at least one of a power terminal unit (120) that receives AC power including a ground wire through a first input terminal (Li) and a second input terminal (Ni), an EMI filter (140) that removes noise included in the AC power, or a ground terminal of the power supply unit (110). The ground terminal may include a ground wire.

[0119] The appliance may be implemented as either a dryer or an air conditioner.

[0120] The configuration of the power supply unit (110) and the EMI filter (140) included in the power supply unit (110) may correspond to the above-described dryer configuration. Duplicate description is omitted.

[0121] FIG. 2 is a drawing for explaining an electronic device (100) in one embodiment.

[0122] Referring to the embodiment (210) of FIG. 2, the electronic device (100) may be implemented as an air conditioner (air conditioner, air conditioning control device). The electronic device (100) may be an air conditioning control device including a cooling or heating function, and the electronic device (100) may include an EMI filter (140). An embodiment related to the air conditioner is described in FIG. 3.

[0123] Referring to the embodiment (220) of FIG. 2, the electronic device (100) may be implemented as a dryer or a washing machine. The electronic device (100) may include an EMI filter (140).

[0124] The electronic device (100) may include a cabinet (11), a door (12), a drum (106), an operation panel (14), and a display (170).

[0125] Referring to the drawing (10) illustrating an electronic device (100), the electronic device (100) may be a device for drying a laundry-ready object (13). The laundry-ready object (13) may be clothing, bedding, towels, etc., but is not limited thereto. The laundry-ready object (13) may be expressed as a laundry-ready object.

[0126] The electronic device (100) may include an air circulation device (not shown) that circulates air in the drum (106) and a hot air supply device (not shown) that heats the medium-temperature, high-humidity air discharged from the drum (106) to create high-temperature, low-humidity air. For example, a damp drying object (13) that has been washed can be dried according to the operation of the air circulation device and the hot air supply device within the drum (106) of the electronic device (100).

[0127] In order to effectively dry the object to be dried, the drum (106) may be configured to rotate continuously so that high-temperature, low-humidity air can uniformly contact the object to be dried.

[0128] The cabinet (11) may be provided with an inlet on the front for inserting and removing a drying object (13). The door (12) is hingedly connected to the front of the cabinet (11), so that the inlet of the cabinet (11) can be opened and closed.

[0129] An operation panel (14) capable of controlling the electronic device (100) may be provided on the upper front of the cabinet (11). The operation panel (14) may include a display (170) capable of displaying the status of the electronic device (100). A user may operate the electronic device (100) by operating the operation panel (14). The operation panel (14) may correspond to an operation interface (160). The operation panel (14) may be implemented as a circular dial or a touch panel.

[0130] The drum (106) is rotatably installed inside the cabinet (11), and one end of the drum (106) can be installed so as to be in communication with the input port of the cabinet (11).

[0131] A sensing device according to one embodiment of the present disclosure can be inserted into the drum (106) through an inlet of an electronic device (100).

[0132] In FIG. 2, the electronic device (100) is described as being implemented as an air conditioner, a dryer, or a washing machine, but the electronic device (100) may be a variety of electronic devices that generate noise.

[0133] FIG. 3 is a block diagram illustrating a specific configuration of a dryer according to various embodiments of the present disclosure.

[0134] Referring to FIG. 3, the electronic device (100) may be composed of a user interface (160), a communication interface (165), a driving unit (101), a driving motor (105), a drum (106), a blower fan (107), a hot air supply device (108), a moisture discharge unit (109), at least one processor (150), a display (170), a memory (175), a speaker (180), and a temperature sensor (185).

[0135] The operating interface (160) may be implemented as a device such as a button, a touch pad, a mouse, and a keyboard, or as a touch screen capable of performing the above-described display function and operating input function. The button may be a mechanical button, a touch pad, a wheel, or any other type of button formed in any area of ​​the front, side, or back of the main body of the electronic device (100).

[0136] Duplicate descriptions of operations identical to those described above among the operations of the communication interface (165) and at least one processor (150) are omitted.

[0137] The driving unit (101) can drive the driving motor (105) based on a driving control signal generated by at least one processor (150).

[0138] The drive motor (105) receives power and generates driving force, and the drive motor (105) can transmit the generated driving force to the drum (106) and the blower fan (107).

[0139] The drum (106) may refer to a drying tank that accommodates a drying object. The drum (106) may be rotated by driving force generated from a driving motor (105).

[0140] The blower fan (107) may refer to a fan that circulates high-temperature air supplied to the drum of the electronic device (100). Specifically, the blower fan (107) may receive a driving control signal generated by at least one processor (150) and rotate to circulate the air inside the drum to which the heat source is supplied.

[0141] The driving unit (101) can receive a driving control signal generated by at least one processor (150) and drive the hot air supply device (108) to supply a heat source to the drum.

[0142] The hot air supply device (108) can supply a heat source to the drum (106).

[0143] The hot air supply device (108) may be implemented as a gas-type heat source supply method or an electric-type heat source supply method. The gas-type may refer to a method of heating air using gas. The electric-type may refer to a method of heating air using electricity. The electric-type may be a method of using at least one of a hot air supply device or a heat pump. The hot air supply device may be a method of supplying a heat source using a heating wire, etc. The heat pump may be a method of supplying a heat source using a refrigerant. The heat pump may be composed of an evaporator, a compressor, and a condenser. Specifically, the evaporator may evaporate a liquid-state refrigerant into a gaseous state. The gaseous refrigerant may be transferred to a compressor. The compressor may compress the refrigerant into a high-temperature, high-pressure state. The compressed refrigerant may be transferred to a condenser. The condenser may perform a heat exchange operation to extract heat from the compressed refrigerant, and may heat and discharge high-temperature air with the extracted heat. The discharged high temperature air can be supplied to the drum (106) of the electronic device (100). The refrigerant that has lost heat by the condenser can be transferred to the evaporator and circulated.

[0144] The moisture discharge unit (109) can discharge moisture inside the electronic device (100). The electronic device (100) may be of a vent type (hot air exhaust method) or a condensing type (hot air dehumidification method) depending on the moisture discharge method. The vent type may be a method that discharges moisture and dust to the outside of the electronic device (100). The condensing type may filter dust and convert moisture into condensate by passing it through a condenser (heat exchanger). The condensate may be discharged to the outside of the electronic device (100) or stored in an internal container of the electronic device (100).

[0145] The display (170) can be implemented as a variety of displays such as an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diodes) display, a PDP (Plasma Display Panel), etc. The display (170) may also include a driving circuit, a backlight unit, etc., which can be implemented as a form such as an a-si TFT, an LTPS (low temperature poly silicon) TFT, an OTFT (organic TFT), etc. The display (170) may be implemented as a touch screen combined with a touch sensor, a flexible display, a 3D display, etc.

[0146] According to one embodiment of the present disclosure, the display (170) may include not only a display panel for outputting images, but also a bezel housing the display panel. In particular, according to one embodiment of the present disclosure, the bezel may include a touch sensor (not shown) for detecting user interaction.

[0147] The memory (175) may be implemented as an internal memory such as a ROM (e.g., an electrically erasable programmable read-only memory (EEPROM)) or RAM included in at least one processor (150), or may be implemented as a separate memory from at least one processor (150). In this case, the memory (175) may be implemented as a memory embedded in the electronic device (100) or as a memory detachable from the electronic device (100) depending on the purpose of data storage. For example, data for driving the electronic device (100) may be stored in a memory embedded in the electronic device (100), and data for expanding functions of the electronic device (100) may be stored in a memory detachable from the electronic device (100).

[0148] In the case of memory embedded in the electronic device (100), it may be implemented as at least one of volatile memory (e.g., dynamic RAM (DRAM), static RAM (SRAM), or synchronous dynamic RAM (SDRAM)), non-volatile memory (e.g., one time programmable ROM (OTPROM), programmable ROM (PROM), erasable and programmable ROM (EPROM), electrically erasable and programmable ROM (EEPROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash), etc.), hard drive, or solid state drive (SSD), and in the case of memory that can be attached or detached to the electronic device (100), it may be implemented in the form of a memory card (e.g., compact flash (CF), secure digital (SD), micro secure digital (Micro-SD), mini secure digital (Mini-SD), extreme digital (xD), multi-media card (MMC), etc.), external memory that can be connected to a USB port (e.g., USB memory), etc.

[0149] The speaker (180) may be a component that outputs various audio data processed in the input / output interface as well as various notification sounds or voice messages.

[0150] The temperature sensor (185) can sense the temperature inside the electronic device (100). The temperature sensor (185) can include at least one of a first temperature sensor that senses the air temperature of the drum (106) inside the electronic device (100) or a second temperature sensor that senses the refrigerant temperature inside the electronic device (100). Temperature data sensed by the temperature sensor (185) can be transmitted to at least one processor (150), and the at least one processor (150) can control the operation of the electronic device (100) based on the sensed temperature data.

[0151] FIG. 4 is a drawing for explaining a power supply device (110) according to one embodiment.

[0152] Referring to the embodiment (410) of FIG. 4, the power supply unit (110) may include at least one of a power terminal unit (120), a third common mode filter (130), or an EMI filter (140).

[0153] The power supply (110) may include at least one of a first input terminal (Li), a second input terminal (Ni), a third input terminal (Ei), a first output terminal (Lo), a second output terminal (No), and a third output terminal (Eo).

[0154] The first input terminal (Li), the second input terminal (Ni), and the third input terminal (Ei) of the power supply device (110) may be included in the input terminal section of the power supply device (110).

[0155] The first output terminal (Lo), the second output terminal (No), and the third output terminal (Eo) of the power supply unit (110) may be included in the output terminal section of the power supply unit (110). The third output terminal (Eo) may be connected to a ground line (or ground terminal).

[0156] The power terminal (120) may include at least one of a first terminal (Li), a second terminal (Ni), or a third terminal (Ei).

[0157] The first terminal (Li) of the power terminal section (120) may be described as the first input terminal of the power supply device (110).

[0158] The second terminal (Ni) of the power terminal (120) may be described as the second input terminal of the power supply device (110).

[0159] The third terminal (Ei) of the power terminal section (120) may be described as the third input terminal of the power supply device (110).

[0160] The power terminal section (120) may be described as an input terminal section.

[0161] The third common mode filter (130) may include at least one of a first input terminal (i1), a second input terminal (i2), a third input terminal (i3), a first output terminal (o1), a second output terminal (o2), and a third output terminal (o3).

[0162] The EMI filter (140) may include at least one of a first input terminal (i4), a second input terminal (i5), a third input terminal (i6), a first output terminal (o4), a second output terminal (o5), and a third output terminal (o6).

[0163] The first input terminal (i1) of the third common mode filter (130) can be connected to the first terminal (Li) of the power terminal (120) via the node (n1).

[0164] The second input terminal (i2) of the third common mode filter (130) can be connected to the second terminal (Ni) of the power terminal (120) via the node (n2).

[0165] The third input terminal (i3) of the third common mode filter (130) can be connected to the third terminal (Ei) of the power terminal (120) via the node (n3).

[0166] The first output terminal (o1) of the third common mode filter (130) can be connected to the first input terminal (i4) of the EMI filter (140) via the node (n4).

[0167] The second output terminal (o2) of the third common mode filter (130) can be connected to the second input terminal (i5) of the EMI filter (140) via the node (n5).

[0168] The third output terminal (o3) of the third common mode filter (130) can be connected to the third input terminal (i6) of the EMI filter (140) via the node (n6).

[0169] The first output terminal (o4) of the EMI filter (140) can be connected to the first output terminal (Lo) of the power supply (110) via the node (n7).

[0170] The second output terminal (o5) of the EMI filter (140) can be connected to the second output terminal (No) of the power supply (110) via the node (n8).

[0171] The third output terminal (o6) of the EMI filter (140) can be connected to the third output terminal (Eo) of the power supply (110) via the node (n9).

[0172] FIG. 5 is a drawing for explaining a power supply device (110) according to one embodiment.

[0173] Referring to the embodiment (510) of FIG. 5, the power supply device (110) may include at least one of a power terminal unit (120), a third common mode filter (130), or an EMI filter (140). The power supply device (110) of FIG. 5 may correspond to the power supply device (110) of FIG. 4. Duplicate description is omitted.

[0174] The EMI filter (140) may include at least one of an X capacitor section (141), a first common mode filter (142), or a Y capacitor section (143).

[0175] The X capacitor unit (141) may include at least one of a first input terminal (i7), a second input terminal (i8), a first output terminal (o7), and a second output terminal (o8).

[0176] The first common mode filter (142) may include at least one of a first input terminal (i9), a second input terminal (i10), a first output terminal (o9), and a second output terminal (o10).

[0177] The Y capacitor section (143) may include at least one of a first input terminal (i11), a second input terminal (i12), a third input terminal (i13), a first output terminal (o11), a second output terminal (o12), and a third output terminal (o13).

[0178] The first output terminal (o1) of the third common mode filter (130) can be connected to the first input terminal (i7) of the X capacitor unit (141) via the node (n4).

[0179] The second output terminal (o2) of the third common mode filter (130) can be connected to the second input terminal (i8) of the X capacitor unit (141) via the node (n4).

[0180] The third output terminal (o3) of the third common mode filter (130) can be connected to the third input terminal (i13) of the Y capacitor unit (143) via the node (n6).

[0181] The first output terminal (o7) of the X capacitor unit (141) can be connected to the first input terminal (i9) of the first common mode filter (142).

[0182] The second output terminal (o8) of the X capacitor unit (141) can be connected to the second input terminal (i10) of the first common mode filter (142).

[0183] The first output terminal (o9) of the first common mode filter (142) can be connected to the first input terminal (i11) of the Y capacitor unit (143).

[0184] The second output terminal (o10) of the first common mode filter (142) can be connected to the first input terminal (i12) of the Y capacitor unit (143).

[0185] The first output terminal (o11) of the Y capacitor unit (143) can be connected to the first output terminal (Lo) of the power supply unit (110) via the node (n7).

[0186] The second output terminal (o12) of the Y capacitor unit (143) can be connected to the second output terminal (No) of the power supply unit (110) via the node (n8).

[0187] The third output terminal (o13) of the Y capacitor unit (143) can be connected to the third output terminal (Eo) of the power supply unit (110) via the node (n9).

[0188] The first input terminal (i4) of the EMI filter (140) of Fig. 4 can be connected to the first input terminal (i7) of the X capacitor unit (141) via the node (n4).

[0189] The second input terminal (i5) of the EMI filter (140) of Fig. 4 can be connected to the second input terminal (i8) of the X capacitor unit (141) via the node (n5).

[0190] The third input terminal (i6) of the EMI filter (140) of Fig. 4 can be connected to the third input terminal (i13) of the Y capacitor section (143) via the node (n6).

[0191] The first output terminal (o4) of the EMI filter (140) of Fig. 4 can be connected to the first output terminal (o11) of the Y capacitor section (143) via the node (n7).

[0192] The second output terminal (o5) of the EMI filter (140) of Fig. 4 can be connected to the second output terminal (o12) of the Y capacitor unit (143) via the node (n8).

[0193] The third output terminal (o6) of the EMI filter (140) of Fig. 4 can be connected to the third output terminal (o13) of the Y capacitor section (143) via the node (n9).

[0194] The arrangement positions of the X capacitor unit (141), the first common mode filter (142), or the Y capacitor unit (143) included in the EMI filter (140) may be different. For example, the X capacitor unit (141), the first common mode filter (142), or the Y capacitor unit (143) may be implemented in a structure different from the arrangement structure disclosed in FIG. 5.

[0195] The EMI filter (140) of Fig. 5 is described as including only one X capacitor unit (141), one first common mode filter (142), or one Y capacitor unit (143). Depending on the implementation example, the EMI filter (140) may include at least one or more of each of the X capacitor unit (141), the first common mode filter (142), or the Y capacitor unit (143).

[0196] For example, it may include two or more X capacitor sections.

[0197] For example, two or more first common mode filters (142) may be included.

[0198] For example, it may include two or more Y capacitor sections.

[0199] FIG. 6 is a drawing for explaining a power supply device (110) according to one embodiment.

[0200] Referring to the embodiment (610) of Fig. 6, the power supply device (110) may include at least one of a power terminal unit (120), a third common mode filter (130), or an EMI filter (140). The power supply device (110) of Fig. 6 may correspond to the power supply device (110) of Fig. 4 or Fig. 5. Duplicate description is omitted.

[0201] The third common mode filter (130) may include at least one of a first inductor (L1), a second inductor (L2), and a third inductor (L3).

[0202] The X capacitor section (141) may include a first capacitor (C1).

[0203] The first common mode filter (142) may include at least one of the fourth inductor (L4) or the fifth inductor (L5).

[0204] The Y capacitor section (143) may include at least one of the second capacitor (C2) or the third capacitor (C3).

[0205] One end (i14) of the first inductor (L1) can be connected to the first terminal (Li) of the power terminal unit (120) via the node (n1). The first terminal (Li) of the power terminal unit (120) can be the first input terminal (Li) of the power supply unit (110).

[0206] A terminal (i15) of the second inductor (L2) can be connected to a second terminal (Ni) of the power terminal section (120) via a node (n2). The second terminal (Ni) of the power terminal section (120) can be a second input terminal (Ni) of the power supply device (110).

[0207] A terminal (i16) of the third inductor (L2) can be connected to a third terminal (Ei) of the power terminal section (120) via a node (n3). The third terminal (Ei) of the power terminal section (120) can be a third input terminal (Ei) of the power supply device (110).

[0208] The other end (o14) of the first inductor (L1) can be connected to at least one of one end (i17) of the first capacitor (C1) or one end (i18) of the fourth inductor (L4) via the node (n4).

[0209] For example, the other end (o14) of the first inductor (L1) can be commonly connected to one end (i17) of the first capacitor (C1) and one end (i18) of the fourth inductor (L4) via the node (n4).

[0210] The other end (o15) of the second inductor (L2) can be connected to at least one of the other end (o17) of the first capacitor (C1) or one end (i19) of the fifth inductor (L5) via the node (n5).

[0211] For example, the other end (o15) of the second inductor (L2) can be commonly connected to the other end (o17) of the first capacitor (C1) and one end (i19) of the fifth inductor (L5) via the node (n5).

[0212] The other end (o16) of the third inductor (L3) may be connected to at least one of the other end (o20) of the second capacitor (C2), one end (i21) of the third capacitor (C3), or the third output terminal (Eo) of the power supply (110) via the node (n6). The node (n6) may be the same node as the node (n9).

[0213] For example, the other end (o16) of the third inductor (L3) can be commonly connected to the other end (o20) of the second capacitor (C2), one end (i21) of the third capacitor (C3), and the third output end (Eo) of the power supply (110) via the node (n6).

[0214] The other end (o18) of the fourth inductor (L4) can be connected to at least one of one end (i20) of the second capacitor (C2) or the first output end (Lo) of the power supply (110) via the node (n7).

[0215] For example, the other end (o18) of the fourth inductor (L4) can be commonly connected to one end (i20) of the second capacitor (C2) and the first output end (Lo) of the power supply (110) via the node (n7).

[0216] The other end (o19) of the fifth inductor (L5) can be connected to at least one of the other end (o21) of the third capacitor (C3) or the second output terminal (No) of the power supply (110) via the node (n8).

[0217] For example, the other end (o19) of the fifth inductor (L5) can be commonly connected to the other end (o21) of the third capacitor (C3) and the second output terminal (No) of the power supply (110) via the node (n8).

[0218] The first input terminal (i1) of the third common mode filter (130) of Fig. 5 can be connected to one end (i14) of the first inductor (L1).

[0219] The second input terminal (i2) of the third common mode filter (130) of Fig. 5 can be connected to one end (i15) of the second inductor (L2).

[0220] The third input terminal (i3) of the third common mode filter (130) of Fig. 5 can be connected to one end (i16) of the third inductor (L3).

[0221] The first output terminal (o1) of the third common mode filter (130) of Fig. 5 can be connected to the other terminal (o14) of the first inductor (L1).

[0222] The second output terminal (o2) of the third common mode filter (130) of Fig. 5 can be connected to the other terminal (o15) of the second inductor (L2).

[0223] The third output terminal (o3) of the third common mode filter (130) of Fig. 5 can be connected to the other terminal (o16) of the third inductor (L3).

[0224] The first input terminal (i7) and the first output terminal (o7) of the X capacitor section (141) of Fig. 5 can be connected to one end (i17) of the first capacitor (C1).

[0225] The second input terminal (i8) and the second output terminal (o8) of the X capacitor section (141) of Fig. 5 can be connected to the other terminal (o17) of the first capacitor (C1).

[0226] The first input terminal (i9) of the first common mode filter (142) of Fig. 5 can be connected to one end (i18) of the fourth inductor (L4).

[0227] The second input terminal (i10) of the first common mode filter (142) of Fig. 5 can be connected to one end (i19) of the fifth inductor (L5).

[0228] The first output terminal (o9) of the first common mode filter (142) of Fig. 5 can be connected to the other terminal (o18) of the fourth inductor (L4).

[0229] The second output terminal (o10) of the first common mode filter (142) of Fig. 5 can be connected to the other terminal (o19) of the fifth inductor (L5).

[0230] The first input terminal (i11) and the first output terminal (o11) of the Y capacitor section (143) of Fig. 5 can be connected to one end (i20) of the second capacitor (C2) via the node (n7).

[0231] The second input terminal (i12) and the second output terminal (o12) of the Y capacitor section (143) of Fig. 5 can be connected to the other terminal (o21) of the third capacitor (C3) via the node (n8).

[0232] The third input terminal (i13) and the third output terminal (o13) of the Y capacitor section (143) of Fig. 5 can be commonly connected to the other terminal (o20) of the second capacitor (C2) and one terminal (i21) of the third capacitor (C3) via the node (n9).

[0233] Figure 7 is a drawing for explaining a power supply device (110) according to one embodiment.

[0234] The power supply unit (110) of the embodiment (710) of FIG. 7 may include a power terminal unit (120) and an EMI filter (140).

[0235] The EMI filter (140) may include at least one of a third common mode filter (130), an X capacitor unit (141), a first common mode filter (142), and a Y capacitor unit (143). Descriptions of each configuration may correspond to FIGS. 4 to 6. Duplicate descriptions are omitted.

[0236] In the description of FIGS. 4 to 6, the third common mode filter (130) is described as being positioned outside the EMI filter (140). According to one embodiment, the third common mode filter (130) may be positioned inside the EMI filter (140). That is, the third common mode filter (130) may be a concept included in the EMI filter (140).

[0237] Figure 8 is a drawing for explaining a power supply device (110) according to one embodiment.

[0238] Embodiment (810) of Fig. 8 may correspond to embodiment (610) of Fig. 6. Duplicate explanation is omitted.

[0239] The EMI filter (140) may include at least one of an X capacitor section (141), a first common mode filter (142), a Y capacitor section (143), or a second common mode filter (144).

[0240] The second common mode filter (144) may include at least one of the sixth inductor (L6) or the seventh inductor (L7).

[0241] One end (i22) of the sixth inductor (L6) can be connected to at least one of one end (i20) of the second capacitor (C2) or the other end (o18) of the fourth inductor (L4) via the node (n10).

[0242] For example, one end (i22) of the sixth inductor (L6) can be commonly connected to one end (i20) of the second capacitor (C2) and the other end (o18) of the fourth inductor (L4) via the node (n10).

[0243] The other end (o22) of the sixth inductor (L6) can be connected to the first output terminal (Lo) of the power supply (110) via the node (n7).

[0244] One end (i23) of the seventh inductor (L7) can be connected to at least one of the other end (o21) of the third capacitor (C3) or the other end (o19) of the fifth inductor (L5) via the node (n11).

[0245] For example, one end (i23) of the seventh inductor (L7) can be commonly connected to the other end (o21) of the third capacitor (C3) and the other end (o19) of the fifth inductor (L5) through the node (n11).

[0246] The other end (o23) of the seventh inductor (L7) can be connected to the second output terminal (No) of the power supply (110) via the node (n8).

[0247] The other end (o18) of the fourth inductor (L4) can be connected to at least one of one end (i20) of the second capacitor (C2) or one end (i22) of the sixth inductor (L6) via the node (n10).

[0248] For example, the other end (o18) of the fourth inductor (L4) can be commonly connected to one end (i20) of the second capacitor (C2) and one end (i22) of the sixth inductor (L6) via the node (n10).

[0249] The other end (o19) of the fifth inductor (L5) can be connected to at least one of the other end (o21) of the third capacitor (C3) or one end (i23) of the seventh inductor (L7) via the node (n11).

[0250] For example, the other end (o19) of the fifth inductor (L5) can be commonly connected to the other end (o21) of the third capacitor (C3) and one end (i23) of the seventh inductor (L7) via the node (n11).

[0251] According to various embodiments, the first common mode filter (131) may be omitted. In the embodiment (810) of FIG. 8, the first common mode filter (131) is omitted.

[0252] The first input terminal (i4) of the EMI filter (140) can be connected to the first input terminal (Li) of the power terminal section via the node (n4). The node (n4) and the node (n1) can be the same.

[0253] The second input terminal (i5) of the EMI filter (140) can be connected to the second input terminal (Ni) of the power terminal section via the node (n5). The node (n5) and the node (n2) can be the same.

[0254] The third input terminal (i6) of the EMI filter (140) can be connected to the third input terminal (Ei) of the power terminal through the node (n6). The node (n6) and the node (n3) can be the same.

[0255] FIG. 9 is a drawing for explaining a power supply device (110) according to one embodiment.

[0256] Embodiment (910) of Fig. 9 may correspond to embodiment (810) of Fig. 8. Duplicate explanation is omitted.

[0257] The second common mode filter (144) may include at least one of the sixth inductor (L6), the fourth capacitor (C4), the seventh inductor (L7), or the fifth capacitor (C5).

[0258] One end (i22) of the sixth inductor (L6) can be connected to at least one of one end (i24) of the fourth capacitor (C4), one end (i20) of the second capacitor (C2), or the other end (o18) of the fourth inductor (L4) via the node (n10).

[0259] For example, one end (i22) of the sixth inductor (L6) can be commonly connected to one end (i24) of the fourth capacitor (C4), one end (i20) of the second capacitor (C2), and the other end (o18) of the fourth inductor (L4) via the node (n10).

[0260] The other terminal (o22) of the sixth inductor (L6) can be connected to at least one of the other terminal (o24) of the fourth capacitor (C4) or the first output terminal (Lo) of the power supply (110) via the node (n7).

[0261] For example, the other end (o22) of the sixth inductor (L6) can be connected to the other end (o24) of the fourth capacitor (C4) and the first output terminal (Lo) of the power supply (110) via the node (n7).

[0262] One end (i23) of the seventh inductor (L7) can be connected to at least one of one end (i25) of the fifth capacitor (C5), the other end (o21) of the third capacitor (C3), or the other end (o19) of the fifth inductor (L5) via the node (n11).

[0263] For example, one end (i23) of the seventh inductor (L7) can be commonly connected to one end (i25) of the fifth capacitor (C5), the other end (o21) of the third capacitor (C3), and the other end (o19) of the fifth inductor (L5) through the node (n11).

[0264] The other terminal (o23) of the seventh inductor (L7) can be connected to at least one of the other terminal (o25) of the fifth capacitor (C5) or the second output terminal (No) of the power supply (110) via the node (n8).

[0265] For example, the other end (o23) of the seventh inductor (L7) can be connected to the other end (o25) of the fifth capacitor (C5) and the second output terminal (No) of the power supply (110) via the node (n8).

[0266] The other end (o18) of the fourth inductor (L4) can be connected to at least one of one end (i20) of the second capacitor (C2), one end (i22) of the sixth inductor (L6), or one end (i24) of the fourth capacitor (C4) via the node (n10).

[0267] For example, the other end (o18) of the fourth inductor (L4) can be commonly connected to one end (i20) of the second capacitor (C2), one end (i22) of the sixth inductor (L6), and one end (i24) of the fourth capacitor (C4) through the node (n10).

[0268] The other end (o19) of the fifth inductor (L5) can be connected to at least one of the other end (o21) of the third capacitor (C3), one end (i23) of the seventh inductor (L7), and one end (i25) of the fifth capacitor (C5) via the node (n11).

[0269] For example, the other end (o19) of the fifth inductor (L5) can be commonly connected to the other end (o21) of the third capacitor (C3), one end (i23) of the seventh inductor (L7), and one end (i25) of the fifth capacitor (C5) through the node (n11).

[0270] The other end (o20) of the second capacitor (C2) can be connected to at least one of the first end (i21) or the third output end (Eo) of the third capacitor (C3) via the node (n9).

[0271] For example, the other end (o20) of the second capacitor (C2) can be commonly connected to one end (i21) of the third capacitor (C3) and the third output terminal (Eo) through the node (n9).

[0272] The third output terminal (Eo) can be connected to a ground wire (or ground terminal).

[0273] FIG. 10 is a drawing for explaining a power supply device (110) according to one embodiment.

[0274] Embodiment (1010) of Fig. 10 may correspond to embodiment (910) of Fig. 9. Duplicate description is omitted. In embodiment (910) of Fig. 9, the first common mode filter (142) may be omitted.

[0275] Node (n10) may be identical to node (n4) and node (n1). Node (n11) may be identical to node (n5) and node (n2).

[0276] The first input terminal (Li) of the power terminal (120) can be connected to at least one of one end (i17) of the first capacitor (C1), one end (i20) of the second capacitor (C2), one end (i24) of the fourth capacitor (C4), and one end (i22) of the sixth inductor (L6) via the node (n1).

[0277] For example, the first input terminal (Li) of the power terminal (120) can be commonly connected to one end (i17) of the first capacitor (C1), one end (i20) of the second capacitor (C2), one end (i24) of the fourth capacitor (C4), and one end (i22) of the sixth inductor (L6) via the node (n1).

[0278] The second input terminal (Ni) of the power terminal (120) can be connected to at least one of the other terminal (o17) of the first capacitor (C1), the other terminal (o21) of the third capacitor (C3), one terminal (i25) of the fifth capacitor (C5), and one terminal (i23) of the seventh inductor (L7) via the node (n2).

[0279] For example, the second input terminal (Ni) of the power terminal (120) can be connected to the other terminal (o17) of the first capacitor (C1), the other terminal (o21) of the third capacitor (C3), one terminal (i25) of the fifth capacitor (C5), and one terminal (i23) of the seventh inductor (L7) via the node (n2).

[0280] FIG. 11 is a drawing for explaining a power supply device (110) according to one embodiment.

[0281] Embodiment (1110) of Fig. 11 may correspond to embodiment (910) of Fig. 9. Duplicate explanation is omitted.

[0282] The EMI filter (140) may include at least one of a first X capacitor unit (141), a first common mode filter (142), a Y capacitor unit (143), a second common mode filter (144), or a second X capacitor unit (145). The X capacitor unit (141) may be described as a first X capacitor unit (141).

[0283] The second X capacitor unit (145) may include a sixth capacitor (C6).

[0284] One end (i26) of the sixth capacitor (C6) may include at least one of one end (i24) of the fourth capacitor (C4), one end (i22) of the sixth inductor (L), one end (i20) of the second capacitor (C2), or the other end (o18) of the fourth inductor (L4) via the node (n10).

[0285] For example, one end (i26) of the sixth capacitor (C6) can be commonly connected to one end (i24) of the fourth capacitor (C4), one end (i22) of the sixth inductor (L), one end (i20) of the second capacitor (C2), and the other end (o18) of the fourth inductor (L4) through the node (n10).

[0286] The other end (o26) of the sixth capacitor (C6) can be connected to at least one of one end (i25) of the fifth capacitor (C5), one end (i23) of the seventh inductor (L7), the other end (o21) of the third capacitor (C3), and the other end (o19) of the fifth inductor (L5) via the node (n11).

[0287] For example, the other end (o26) of the sixth capacitor (C6) can be commonly connected to one end (i25) of the fifth capacitor (C5), one end (i23) of the seventh inductor (L7), the other end (o21) of the third capacitor (C3), and the other end (o19) of the fifth inductor (L5) through the node (n11).

[0288] The other end (o18) of the fourth inductor (L4) can be connected to at least one of one end (i20) of the second capacitor (C2), one end (i26) of the sixth capacitor (C6), one end (i22) of the sixth inductor (L6), and one end (i24) of the fourth capacitor (C4) via the node (n10).

[0289] For example, the other end (o18) of the fourth inductor (L4) can be commonly connected to one end (i20) of the second capacitor (C2), one end (i26) of the sixth capacitor (C6), one end (i22) of the sixth inductor (L6), and one end (i24) of the fourth capacitor (C4) through the node (n10).

[0290] The other end (o19) of the fifth inductor (L5) can be connected to at least one of the other end (o21) of the third capacitor (C3), the other end (o26) of the sixth capacitor (C6), one end (i23) of the seventh inductor (L7), or one end (i25) of the fifth capacitor (C5) via the node (n11).

[0291] For example, the other end (o19) of the fifth inductor (L5) can be commonly connected to the other end (o21) of the third capacitor (C3), the other end (o26) of the sixth capacitor (C6), one end (i23) of the seventh inductor (L7), and one end (i25) of the fifth capacitor (C5) through the node (n11).

[0292] Fig. 12 is a drawing for explaining a power supply device (110) according to one embodiment.

[0293] Embodiment (1310) of Fig. 13 may correspond to embodiment (1210) of Fig. 12. Duplicate description is omitted. In embodiment (1210) of Fig. 12, the first X capacitor unit (141) may be omitted.

[0294] The EMI filter (140) may include at least one of a first common mode filter (142), a Y capacitor unit (143), a second common mode filter (144), or a second X capacitor unit (145).

[0295] One end (i18) of the fourth inductor (L4) can be connected to the first input terminal (Li) of the power terminal (120) via the node (n4).

[0296] One end (i19) of the fifth inductor (L5) can be connected to the second input terminal (Ni) of the power terminal (120) via the node (n5).

[0297] FIG. 13 is a drawing for explaining a power supply device (110) according to one embodiment.

[0298] In the embodiment of Fig. 13 (referring to 1310), the EMI filter (140) may include at least one of an X capacitor unit (141), a first common mode filter (142), a Y capacitor unit (143), a second common mode filter (144), and a differential mode filter (146).

[0299] The differential mode filter (146) can remove differential mode current, which is noise generated in the power supply. The differential mode filter (146) can include at least one of the eighth inductor (L8) or the ninth inductor (L9).

[0300] One end (i27) of the eighth inductor (L8) can be connected to at least one of the other end (o24) of the fourth capacitor (C4) or the other end (o22) of the sixth inductor (L6) via the node (n12).

[0301] For example, one end (i27) of the eighth inductor (L8) can be commonly connected to the other end (o24) of the fourth capacitor (C4) and the other end (o22) of the sixth inductor (L6) through the node (n12).

[0302] The other end (o27) of the eighth inductor (L8) can be connected to the first output terminal (Lo) via the node (n7).

[0303] One end (i28) of the ninth inductor (L9) can be connected to at least one of the other end (o25) of the fifth capacitor (C5) or the other end (o23) of the seventh inductor (L7) via the node (n13).

[0304] For example, one end (i28) of the ninth inductor (L9) can be commonly connected to the other end (o25) of the fifth capacitor (C5) and the other end (o23) of the seventh inductor (L7) through the node (n13).

[0305] The other end (o28) of the ninth inductor (L9) can be connected to the second output terminal (No) via the node (n8).

[0306] According to various embodiments, the second capacitor unit (145) of FIG. 12 may be added in the embodiment (1310) of FIG. 13. Duplicate description is omitted.

[0307] Figure 14 is a diagram for explaining the change in impedance according to the type of inductor.

[0308] Table (1410) of FIG. 14 may include physical characteristic information of inductor A and inductor B.

[0309] Assume that the inductance of inductor A is 2 mH at a frequency of 1 kHz. The self-resonant frequency of inductor A may be 700 kHz. When the frequency is 300 kHz, the impedance of inductor A may be 3.9 kΩ. When the frequency is 1000 kHz, the impedance of inductor A may be 7.2 kΩ.

[0310] Assume that the inductance of inductor B is 5 mH at a frequency of 1 kHz. The self-resonant frequency of inductor B may be 450 kHz. When the frequency is 300 kHz, the impedance of inductor B may be 6.8 kΩ. When the frequency is 1000 kHz, the impedance of inductor B may be 5.6 kΩ.

[0311] Inductance Using a relatively larger inductor can increase the impedance at a certain frequency (e.g., 300 kHz). Inductance Using a relatively larger inductor can decrease the self-resonant frequency and actually decrease the impedance at a certain frequency (e.g., 1000 kHz).

[0312] Depending on the inductance of the inductor used in the electronic device (100), the physical characteristics, etc. may change. If an inductor with a large inductance is used to increase impedance, the overall physical characteristics of the electronic device (100) may change.

[0313] Figure 15 is a drawing for explaining the operation of determining the capacity of a capacitor additionally placed to increase impedance.

[0314] Equation (1500) of FIG. 15 may include a process for calculating the capacitor capacity added to the target inductor.

[0315] The formula (1500) may include Cp={1 / 2}*{1 / (w^2*L)-1 / (Z_L*w)}.

[0316] Cp can represent the capacitance of the capacitor added to the inductor.

[0317] w can represent frequency. Frequency (w) can be written as 2πf. f can represent frequency.

[0318] L can represent the target inductor.

[0319] Z_L may represent a target impedance. The target impedance may represent the total impedance of the second common mode filter (144) that the user wishes to implement.

[0320] Example (1510) may represent the second common mode filter (144) of FIG. 9. The second common mode filter (144) may include a sixth inductor (L6) and a seventh inductor (L7).

[0321] Each of the sixth inductor (L6) and the seventh inductor (L7) included in the second common mode filter (144) may have parasitic resistance and parasitic capacitance. The parasitic resistance may refer to an internal resistance that occurs when current flows in a coil inside the inductor. The parasitic capacitance may refer to an internal capacitor that occurs due to the electrical connection (or contact) between the inductor and surrounding components.

[0322] R_L6 can represent the parasitic resistance of the sixth inductor (L6).

[0323] C_L6 may represent the parasitic capacitor of the sixth inductor (L6).

[0324] R_L7 can represent the parasitic resistance of the seventh inductor (L7).

[0325] C_L7 can represent the parasitic capacitor of the seventh inductor (L7).

[0326] Example (1520) may represent the second common mode filter (144) of FIG. 11. The second common mode filter (144) may include a sixth inductor (L6) and a seventh inductor (L7). The second common mode filter (144) may additionally include target capacitors (C4, C5). A target capacitor may be added to each of the inductors included in the second common mode filter (144).

[0327] The target capacitor can be determined based on the Cp value calculated in formula (1500). The fourth capacitor (C4), which is the target capacitor, can be arranged in parallel with the sixth inductor (L6). The fifth capacitor (C5), which is the target capacitor, can be arranged in parallel with the seventh inductor (L7).

[0328] Figure 16 is a diagram for explaining the change in impedance according to the additionally placed capacitor.

[0329] Referring to FIG. 16, graph (1600) may represent impedance changes according to various embodiments. Embodiment (1610) may correspond to embodiment (1510) of FIG. 15. Embodiment (1620) may correspond to embodiment (1520) of FIG. 15.

[0330] In the embodiment (1510) of Fig. 15, it is assumed that the second common mode filter (144) includes only the sixth inductor (L6) and the seventh inductor (L7). The embodiment (1610) can exhibit an impedance change according to frequency (or vibration frequency) in the embodiment (1510) of Fig. 15.

[0331] In the embodiment (1520) of Fig. 15, it is assumed that the second common mode filter (144) includes all of the sixth inductor (L6), the target capacitor (C4) of the sixth inductor (L6), the seventh inductor (L7), and the target capacitor (C5) of the seventh inductor (L7). The embodiment (1620) can exhibit an impedance change according to frequency (or vibration frequency) in the embodiment (1520) of Fig. 15.

[0332] When a target capacitor is added, the impedance characteristics of the second common mode filter (144) may change. When a target capacitor is added, the resonant frequency of the second common mode filter (144) may decrease. When a target capacitor is added, the impedance may increase in a specific frequency band (e.g., 10^5 Hz to 10^6 Hz).

[0333] The impedance of the second common mode filter (144) can be changed by adding a target capacitor without changing the inductance.

[0334] Fig. 17 is a drawing for explaining the first common mode filter (142).

[0335] The first common mode filter (142) may represent a two-terminal common mode choke. The first common mode filter (142) may include a core and two windings. The core may be a circular core. The core may be a magnetic material. The two windings may be wound in the same direction.

[0336] Referring to embodiment (1710) of FIG. 17, the first common mode filter (142) may include a core (1701), a first winding (1711), and a second winding (1712). The first winding (1711) and the second winding (1712) may be wound in the same direction.

[0337] Being wound in the same direction may mean that both windings (1711, 1712) are wound from the outside to the inside along the same first face of the core (1701).

[0338] The first winding (1711) and the second winding (1712) may be wound around the core (1701) in different directions based on the direction in which the common current moves around the circular central axis of the core (1701). The first winding (1711) may be wound around the core (1701) in a clockwise direction, and the second winding (1712) may be wound around the core (1701) in a counterclockwise direction.

[0339] Referring to embodiment (1720) of FIG. 17, the first common mode filter (142) may include a core (1702), a first winding (1721), and a second winding (1722). The first winding (1721) and the second winding (1722) may be wound in the same direction.

[0340] Being wound in the same direction may mean that both windings (1721, 1722) are wound from the outside to the inside along the same first face of the core (1702).

[0341] The first winding (1721) and the second winding (1722) may be wound around the core (1702) in different directions based on the direction in which the common current moves around the circular central axis of the core (1702). The first winding (1721) may be wound counterclockwise and the second winding (1722) may be wound clockwise.

[0342] Fig. 18 is a drawing for explaining the third common mode filter (130).

[0343] The third common mode filter (130) may be a three-terminal common mode choke. The three-terminal may refer to a terminal having three input or output terminals. The third common mode filter (130) may include three pairs of input and output terminals.

[0344] Referring to Example (1810), the third common mode filter (130) may include a core (1801), a first winding (1811), a second winding (1812), and a third winding (1813). The first winding (1811), the second winding (1812), and the third winding (1813) may be wound in the same direction.

[0345] Being wound in the same direction may mean that all three windings (1811, 1812, 1813) are wound from the outside to the inside along the same first face of the core (1801).

[0346] The first winding (1811), the second winding (1812), and the third winding (1813) may be wound in the same direction based on the direction in which the common current moves around the circular central axis of the core (1801). The first winding (1811), the second winding (1812), and the third winding (1813) may be wound in a counterclockwise direction.

[0347] Embodiment 18 (1820) of FIG. 18 is a side view of the third common mode filter (130).

[0348] The third common mode filter (130) can be designed to satisfy the withstand voltage condition between the first winding (1811) and the second winding (1812) connected to the first input terminal (Li) and the second input terminal (N9) of the power terminal (120) and the third winding (1813) connected to the third input terminal (Ei).

[0349] Figure 19 is a diagram illustrating a device under test (EUT) and a line impedance stabilization network (LISN).

[0350] Referring to FIG. 19, an equipment under test (EUT) 10 may be connected to a line impedance stabilization network (LISN) 20. The line impedance stabilization network (LISN) (20) may be connected to an external power source (200). The external power source (200) may include three terminals (Li, Ni, Ei). The equipment under test (10) may correspond to an electronic device (100).

[0351] The device under test (10) may refer to a noise source. The device under test (10) may be described as a noise source device.

[0352] The line impedance stabilization network (20) may be described as a power line impedance stabilization circuit. The line impedance stabilization network (20) may be a standard device for testing electromagnetic interference. The line impedance stabilization network (20) can provide accurate (or stable) line impedance. The line impedance stabilization network (20) can prevent circuit damage due to overload by providing high impedance.

[0353] The line impedance stabilization network (20) may be a measuring instrument for measuring EMI (Electro Magnetic Interference) or EMC (Electro Magnetic Compatibility). The line impedance stabilization network (20) can isolate only noise by using a filter function.

[0354] One end of the line impedance stabilization network (20) can be connected to the device under test (10), and the other end of the line impedance stabilization network (20) can be connected to an external power source (200).

[0355] According to one embodiment, a line impedance stabilization network (20) can be added to the electronic device (100) to isolate noise. The electronic device (100) can analyze noise based on the isolated noise.

[0356] The electronic device (100) can control the third common mode filter (130) using the analysis results. For example, the electronic device (100) can measure the noise level using the analysis results, and the electronic device (100) can perform a mode in which the switch (S1) of FIG. 10 operates in an on state based on the measured noise.

[0357] Fig. 20 is a drawing for explaining a line impedance stabilization network (20).

[0358] Referring to the embodiment of FIG. 20 (2010), the line impedance stabilization network (20) may be a circuit network for measuring conducted emission (CE) in a band from 9 kHz or 150 kHz to 30 MHz.

[0359] The line impedance stabilization network (20) may include at least one capacitor, at least one inductor, and at least one resistor. The line impedance stabilization network (20) may include a high-frequency filter (HPF).

[0360] Embodiment 20 (2010) of FIG. 20 illustrates one circuit among various line impedance stabilization networks (20). The line impedance stabilization network (20) may be implemented with a circuit other than that of embodiment 2010.

[0361] Fig. 21 is a diagram for explaining the interference current flowing in the test target device (10) and the line impedance stabilization network (20).

[0362] Referring to the embodiment (2110) of FIG. 21, a line impedance stabilization network (20) can be connected to a device under test (10). The device under test (10) can correspond to an electronic device (100).

[0363] When power is supplied to the test device (10) and the line impedance stabilization network (20), noise may be generated. For example, at least one of a common mode current or a differential mode current may be generated.

[0364] The test target device (10) and the line impedance stabilization network (20) may be connected by an L line, an N line, and an E line. The E line may be a virtual line implemented as a ground. In reality, the E line may not be a separate wire.

[0365] Common mode current can flow in the L-line, N-line, and E-line. The common mode current can flow from the device under test (10) toward the line impedance stabilization network (20) through the L-line.

[0366] Common mode current can flow from the device under test (10) through the N line toward the line impedance stabilization network (20).

[0367] Common mode current can flow from the line impedance stabilization network (20) through the E line toward the device under test (10).

[0368] Differential mode current can flow in the L-line and the N-line. The differential mode current can flow from the device under test (10) toward the line impedance stabilization network (20) through the L-line.

[0369] Differential mode current can flow from the line impedance stabilization network (20) through the N line toward the device under test (10).

[0370] FIG. 22 is a diagram for explaining an EMI filter and interference current according to one embodiment.

[0371] Embodiment (2210) of Fig. 22 shows an EMI filter (140). The EMI filter (140) may include at least one of an X capacitor section (141), a first common mode filter (142), and a Y capacitor section (143).

[0372] The X capacitor section (141) can return (by-pass) the differential mode current to the inside of the product.

[0373] The first common mode filter (142) can limit the emission of noise by blocking the flow so that the interference current is not emitted to the outside.

[0374] The Y capacitor section (143) can return (by-pass) the common mode current into the product.

[0375] Embodiment (2220) of Fig. 22 shows noise flowing when power is supplied to the EMI filter (140) of embodiment (2210). The EMI filter (140) of embodiment (2210) can remove noise (common mode current or differential mode current). The EMI filter (140) can remove the common mode current by using the first common mode filter (142).

[0376] FIG. 23 is a diagram for explaining an EMI filter and interference current according to one embodiment.

[0377] Referring to the embodiment (2310) of Fig. 23, the EMI filter (140) may include at least one of an X capacitor section (141), a first common mode filter (142), a Y capacitor section (143), and a differential mode filter (146). Although not described in Fig. 23, a second common mode filter (144) may be added.

[0378] Embodiment (2320) of Fig. 23 shows the flow of common mode current and differential mode current in the EMI filter (140) of embodiment (2310).

[0379] The EMI filter (140) can remove common mode current using a first common mode filter (142). The EMI filter (140) can remove differential mode current using a differential mode filter (146). The differential mode filter (146) can include two inductors. Depending on the implementation example, the differential mode filter (146) can include one inductor. One inductor can be placed on the L line or the N line.

[0380] Meanwhile, the methods according to the various embodiments of the present disclosure described above can be implemented in the form of applications that can be installed on existing electronic devices.

[0381] The methods according to the various embodiments of the present disclosure described above can be implemented only with a software upgrade or a hardware upgrade for an existing electronic device.

[0382] The various embodiments of the present disclosure described above may also be performed through an embedded server provided in an electronic device, or an external server of at least one of the electronic device and the display device.

[0383] Meanwhile, according to a temporary example of the present disclosure, the various embodiments described above can be implemented as software including instructions stored in a machine-readable storage medium that can be read by a machine (e.g., a computer). The device is a device that can call instructions stored in the storage medium and operate according to the called instructions, and may include an electronic device according to the disclosed embodiments. When an instruction is executed by a processor, the processor can perform a function corresponding to the instruction directly or under the control of the processor by using other components. The instruction may include code generated or executed by a compiler or interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium does not contain a signal and is tangible, but does not distinguish between whether data is stored semi-permanently or temporarily in the storage medium.

[0384] According to one embodiment of the present disclosure, the method according to the various embodiments described above may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or online through an application store (e.g., Play Store™). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0385] Each of the components (e.g., modules or programs) according to the various embodiments described above may be composed of a single or multiple entities, and some of the sub-components described above may be omitted, or other sub-components may be further included in various embodiments. Alternatively or additionally, some components (e.g., modules or programs) may be integrated into a single entity, which may perform the same or similar functions as those performed by each of the respective components prior to integration. Operations performed by modules, programs or other components according to various embodiments may be executed sequentially, in parallel, iteratively or heuristically, or at least some operations may be executed in a different order, omitted, or other operations may be added.

[0386] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea of ​​the present disclosure.

Claims

1. In the dryer, A drum for receiving a dry object; A hot air supply device for supplying hot air into the inside of the drum; A motor used to rotate the above drum; a power supply unit for supplying power to the above motor; and comprising at least one processor controlling the motor; The above power supply unit, A power terminal section for receiving AC power including a ground wire through the first input terminal and the second input terminal; EMI filter for removing noise contained in the AC power; and A grounding terminal including a grounding wire connected to the power supply; The above EMI filter, X capacitor section including a first capacitor; A first common mode filter including a first core, a first inductor wound around the first core, and a second inductor wound around the first core; A Y capacitor section including a second capacitor and a third capacitor connected in series; and A dryer comprising: a second common mode filter including a second core, a third inductor wound around the second core, a fourth capacitor connected in parallel with the third inductor, a fourth inductor wound around the second core, and a fifth capacitor connected in parallel with the fourth inductor.

2. In paragraph 1, At least one processor of the above, A dryer that controls the hot air supply device by supplying AC power to the motor from which the noise has been removed through the EMI filter.

3. In paragraph 1, The above power supply unit A dryer comprising a first output terminal and a second output terminal connected to the second common mode filter.

4. In paragraph 3, One end of the above first inductor is, Commonly connected to one end of the first capacitor and the first input terminal, The other end of the above first inductor is, A dryer, which is commonly connected to one end of the second capacitor, one end of the fourth capacitor, and one end of the third inductor.

5. In paragraph 4, One end of the above second inductor is, Commonly connected to the other terminal of the first capacitor and the second input terminal, The other end of the above second inductor is, A dryer, which is commonly connected to the other terminal of the third capacitor, one terminal of the fifth capacitor, and one terminal of the fourth inductor.

6. In paragraph 5, The other end of the above third inductor is, Connected to the other terminal of the fourth capacitor and the first output terminal, The other end of the above fourth inductor is, A dryer connected to the other terminal of the fifth capacitor and the second output terminal.

7. In paragraph 1, The above first inductor and the above second inductor are connected in series, The third inductor and the fourth inductor are connected in series, the dryer.

8. In paragraph 1, The above first core is composed of a magnetic material, The first inductor and the second inductor wrap around the first core in the same direction, The above second core is composed of a magnetic material, The third inductor and the fourth inductor are wound around the second core in the same direction, the dryer.

9. In paragraph 1, The above grounding terminal is, A dryer, which is commonly connected to the other terminal of the second capacitor and one terminal of the third capacitor.

10. In paragraph 1, The above motor, A dryer that uses a BLDC (Brushless Direct Current) motor and receives power that has passed through the EMI filter.

11. In paragraph 1, A dryer further comprising a substrate on which the power terminal section and the EMI filter are arranged.

12. In paragraph 1, The above X capacitor part is a first X capacitor part, The above EMI filter, Further comprising a second X capacitor section including a sixth capacitor, The above second X capacitor part, A dryer connected in parallel to the first X capacitor section, the first common mode filter, the Y capacitor section, and the second common mode filter.

13. In paragraph 12, One end of the above sixth capacitor is, Commonly connected to the other end of the first inductor, one end of the second capacitor, one end of the fourth capacitor, and one end of the third inductor, The other terminal of the above sixth capacitor is, A dryer, which is commonly connected to the other terminal of the second inductor, the other terminal of the third capacitor, one terminal of the fifth capacitor, and one terminal of the fourth inductor.

14. In paragraph 1, The above EMI filter, A differential mode filter including a fifth inductor and a sixth inductor is included, The above differential mode filter is, Connected in parallel to the first X capacitor section, the first common mode filter, the Y capacitor section, and the second common mode filter. One end of the above fifth inductor is, Commonly connected to the other terminal of the fourth capacitor and the other terminal of the third inductor, The other end of the above fifth inductor is, A dryer connected to the first output terminal. One end of the above sixth inductor is, Commonly connected to the other terminal of the fifth capacitor and the other terminal of the fourth inductor, The other end of the above sixth inductor is A dryer connected to the second output terminal.

15. In home appliances, motor; a power supply unit for supplying power to the above motor; and comprising at least one processor controlling the motor; The above power supply unit, A power terminal section for receiving AC power including a ground wire through the first input terminal and the second input terminal; EMI filter for removing noise contained in the AC power; and A grounding terminal including a grounding wire connected to the power supply; The above EMI filter, X capacitor section including a first capacitor; A first common mode filter including a first core, a first inductor wound around the first core, and a second inductor wound around the first core; A Y capacitor section including a second capacitor and a third capacitor connected in series; and A home appliance, comprising: a second common mode filter including a second core, a third inductor wound around the second core, a fourth capacitor connected in parallel with the third inductor, a fourth inductor wound around the second core, and a fifth capacitor connected in parallel with the fourth inductor.

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