Multi-power garment steamer control circuit based on MOS (Metal Oxide Semiconductor) and multi-power garment steamer

Abstract

The utility model provides an MOS-based multi-power garment steamer control circuit and a multi-power garment steamer, the MOS-based multi-power garment steamer control circuit comprises a power switch, a load circuit, a bridge rectifier module and an MOS control circuit, the power switch is connected with the load circuit, the load circuit comprises a first branch circuit and a second branch circuit which are connected in parallel, the first branch circuit is connected with a water supply part in series, and the second branch circuit is connected with the bridge rectifier module. The second branch is connected with a bridge rectifier module, the bridge rectifier module is connected with a heating part in series, the load circuit is connected with an MOS control circuit, the MOS control circuit is connected with the bridge rectifier module, and the MOS control circuit is used for determining whether to disconnect the load circuit or not according to whether the peak value of the working voltage exceeds a set threshold value or not. Normal work of the multi-power-supply garment steamer under different power supply voltages is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of garment steamers, and in particular to a MOS-based multi-power garment steamer control circuit and a multi-power garment steamer. Background Art

[0002] A garment steamer is a household appliance used for ironing clothes. It helps remove wrinkles from clothes by generating hot steam or hot air, making clothes look neater. The voltage of AC power supply in the world is distributed in two sections: 100V-120V or 220V-240V. For example, Asia, Europe and other regions use 220V AC with a frequency of 50 Hz, while North America, Japan and other regions use 110V AC with a frequency of 60 Hz.

[0003] In today's globalized world, manufacturers need to design garment steamers that can adapt to these two different voltages and improve the applicability of garment steamers in different power supply voltage environments. However, it is obviously inappropriate to design garment steamers with components of different rated working voltages for different power supply voltage environments. This will not only increase the design cost, but also the product is corresponding to one of the power supply voltage environments, and the same garment steamer cannot adapt to two different power supply voltage environments at the same time. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a MOS-based multi-power supply garment steamer control circuit and a multi-power supply garment steamer to adapt to different power supply voltages and improve the applicability of the garment steamer in different power supply voltage environments.

[0005] In order to achieve the above purpose, the embodiments of the present application are implemented in the following manner:

[0006] In the first aspect, an embodiment of the present application provides a MOS-based multi-power supply garment steamer control circuit, including a power switch, a load circuit, a bridge rectifier module and a MOS control circuit, the power switch is connected to the load circuit, the load circuit includes a first branch and a second branch connected in parallel, a water supply part is connected in series on the first branch, a bridge rectifier module is connected to the second branch, a heating part is connected in series on the bridge rectifier module, the load circuit is connected to the MOS control circuit, and the MOS control circuit is connected to the bridge rectifier module to form a MOS-based multi-power supply garment steamer control circuit, wherein the MOS control circuit is used to determine whether to disconnect the load circuit according to whether the peak value of the working voltage exceeds a set threshold value, so as to realize normal operation of the multi-power supply garment steamer under different power supply voltages.

[0007] In combination with the first aspect, in a first possible implementation of the first aspect, the MOS-based multi-power garment steamer control circuit also includes a power connector, and the power connector includes a first contact piece and a second contact piece; the first contact piece is connected to the power switch, and the second contact piece is connected to the bridge rectifier module.

[0008] In combination with the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the bridge rectifier module includes 4 diodes and has two power connection terminals and two load connection terminals, the power switch is connected between the first contact piece and the first power connection terminal, and the second contact piece is connected to the second power connection terminal; the MOS control circuit is connected between the first load connection terminal and the second load connection terminal; and the heating part is connected between the first load connection terminal and the MOS control circuit.

[0009] In combination with the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the MOS control circuit includes a voltage stabilizing circuit, a voltage step-down circuit and an N-type MOS tube, the voltage stabilizing circuit includes a voltage regulator, the reference pole of the voltage regulator is connected to the first load connection terminal of the bridge rectifier module via a series resistor, the cathode of the voltage regulator is connected to the G pole of the N-type MOS tube, and the anode of the voltage regulator is connected to the D pole of the N-type MOS tube; the first end of the voltage step-down circuit is connected to the first load connection terminal of the bridge rectifier module, the second end of the voltage step-down circuit is connected to the G pole of the N-type MOS tube, and the second end of the voltage step-down circuit is connected to the D pole of the N-type MOS tube via an RC filter circuit; the S pole of the N-type MOS tube is connected to the load circuit, and the D pole of the N-type MOS tube is connected to the second load connection terminal of the bridge rectifier module.

[0010] In combination with the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the voltage stabilizing circuit further includes a resistor R13, a resistor R16, a resistor R19 and a capacitor C8, the first load connection end of the bridge rectifier module is connected in series with the resistor R13 and the resistor R16, and the resistor R16 is connected to the reference pole of the voltage regulator; the first load connection end of the bridge rectifier module is connected in series with the resistor R13, the resistor R16, and the resistor R19, and the resistor R19 is connected to the anode of the voltage regulator, and the capacitor C8 is connected in parallel at both ends of the resistor R19 to form an RC filtering circuit; the cathode of the voltage regulator is connected to the G pole of the N-type MOS tube, and the anode of the voltage regulator is connected to the D pole of the N-type MOS tube.

[0011] In combination with the third possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the step-down circuit includes a resistor R14, a resistor R17, a resistor R18 and a capacitor C7, the first load connection end of the bridge rectifier module is connected in series with the resistor R14 and the resistor R17, and the resistor R17 is connected to the G pole of the N-type MOS tube; the first load connection end of the bridge rectifier module is connected in series with the resistor R14, the resistor R17, and the resistor R18, and the resistor R18 is connected to the D pole of the N-type MOS tube, and the capacitor C7 is connected in parallel at both ends of the resistor R18 to form an RC filter circuit.

[0012] In combination with the first aspect, in a sixth possible implementation manner of the first aspect, the heating portion includes a heating element and a temperature fuse connected in series.

[0013] In combination with the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the heating portion further includes a thermostat, and the thermostat is connected in series with the heating element and the temperature fuse.

[0014] In combination with the first aspect, in a second possible implementation manner of the first aspect, the water supply unit includes a diode and a water pump connected in series.

[0015] In a second aspect, an embodiment of the present application provides a multi-power supply garment steamer, comprising a MOS-based multi-power supply garment steamer control circuit as described in any one of the first aspect or possible implementation methods of the first aspect, wherein the MOS-based multi-power supply garment steamer control circuit is built into the multi-power supply garment steamer, and the multi-power supply garment steamer can operate normally under different power supply voltages through the MOS-based multi-power supply garment steamer control circuit.

[0016] Beneficial effects:

[0017] The load circuit (including the first branch and the second branch connected in parallel) is connected by the power switch of the MOS-based multi-power supply garment steamer control circuit, the water supply part is connected in series on the first branch, the bridge rectifier module is connected to the second branch, the bridge rectifier module is connected in series with the heating part, the load circuit is connected to the MOS control circuit, and the MOS control circuit is connected to the bridge rectifier module to form a MOS-based multi-power supply garment steamer control circuit, and the MOS control circuit is used to determine whether to disconnect the load circuit according to whether the peak value of the working voltage exceeds the set threshold, so as to realize the normal operation of the multi-power supply garment steamer under different power supply voltages. For example, using the MOS control circuit, when the peak value of the working voltage exceeds the set threshold, the connection between the load circuit and the second contact piece can be disconnected, and when the peak value of the working voltage does not exceed the set threshold, the connection between the load circuit and the second contact piece is maintained, so that under the condition of high voltage power supply, the characteristics of the alternating current sine wave (periodic gradual increase and gradual decrease) can be used to keep the load circuit working when the peak voltage at the current moment does not exceed the set threshold, and the load circuit is not working when the peak voltage at the current moment exceeds the set threshold. Under the condition of low voltage power supply, its peak voltage at any time will not exceed the set threshold, and it can work normally. Therefore, the MOS-based multi-power garment steamer control circuit can be utilized to select components that can meet the normal operation under the set power supply voltage, thereby achieving normal operation of the multi-power garment steamer under different power supply voltages.

[0018] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a MOS-based multi-power garment steamer control circuit provided in an embodiment of the present application.

[0021] Icons: 11-power connector; 12-power switch; 13-heating part; 131-heating element; 132-temperature fuse; 133-thermostat; 14-water supply part; 141-diode; 142-water pump; 15-bridge rectifier module; 16-MOS control circuit; C7, C8-capacitors; R13, R14, R16, R17, R18, R19-resistors. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0023] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] It should also be noted that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, when introducing the connection relationship between the components in the circuit in this embodiment, in order to facilitate understanding and make the current flow direction clearer, the description method of "first" and "later" to indicate the order is used, which should not be regarded as a limitation of this application. The order of connection of components in actual products is not prioritized.

[0025] The present embodiment provides a multi-power supply garment steamer, in which a MOS-based multi-power supply garment steamer control circuit is built into the multi-power supply garment steamer, and the multi-power supply garment steamer control circuit based on MOS enables the multi-power supply garment steamer to operate normally under different power supply voltages.

[0026] See also Figure 1 , Figure 1 Schematic diagram of a MOS-based multi-power garment steamer control circuit provided in an embodiment of the present application. In this embodiment, the MOS-based multi-power garment steamer control circuit includes a power connector 11, a power switch 12, a load circuit, a bridge rectifier module 15 and a MOS control circuit 16.

[0027] The power switch 12 is connected to the load circuit, and the load circuit includes a first branch and a second branch in parallel. The first branch is connected in series with a water supply part 14, and the second branch is connected to a bridge rectifier module 15. The bridge rectifier module 15 is connected in series with a heating part 13. The load circuit is connected to a MOS control circuit 16, and the MOS control circuit 16 is connected to the bridge rectifier module 15 to form a MOS-based multi-power supply garment steamer control circuit, wherein the MOS control circuit 16 is used to determine whether to disconnect the load circuit according to whether the peak value of the working voltage exceeds a set threshold, so as to achieve normal operation of the multi-power supply garment steamer under different power supply voltages.

[0028] Exemplarily, the power connector 11 may include a first contact piece (i.e., a contact connected to the power supply) and a second contact piece (another contact connected to the power supply). Then, after the first contact piece is connected in series with the power switch 12, the first branch and the second branch are connected in parallel. The first branch is connected in series with the water supply unit 14, and after the second branch is connected with the bridge rectifier module 15, the heating unit 13 is connected in series. After the first branch and the second branch are combined, a load circuit is formed. The load circuit is connected to the MOS control circuit 16, and then returns to the second contact piece through the bridge rectifier module 15, thereby forming a MOS-based multi-power supply garment steamer control circuit.

[0029] The MOS control circuit 16 is used to disconnect the connection between the load circuit and the second contact piece when the peak value of the working voltage exceeds the set threshold, and to maintain the connection between the load circuit and the second contact piece when the peak value of the working voltage does not exceed the set threshold. Therefore, using the MOS control circuit 16, the MOS-based multi-power supply hanging ironing machine control circuit can disconnect the connection between the load circuit and the second contact piece when the peak value of the working voltage exceeds the set threshold, and maintain the connection between the load circuit and the second contact piece when the peak value of the working voltage does not exceed the set threshold. In this way, under the condition of a high voltage power supply, the characteristics of the AC sine wave (periodic gradual increase and decrease) can be used to maintain the operation of the load circuit when the peak voltage at the current moment does not exceed the set threshold, and the load circuit is stopped when the peak voltage at the current moment exceeds the set threshold. Under the condition of a low voltage power supply, its peak voltage at any time will not exceed the set threshold, and it can work normally.

[0030] First, the bridge rectifier module 15 includes 4 diodes (high current diodes), and has two power connection terminals (two power connection terminals are opposite, and two diodes are spaced on both sides) and two load connection terminals (two load connection terminals are opposite, and two diodes are spaced on both sides), which are distributed around the first power connection terminal, the first load connection terminal, the second power connection terminal, and the second load connection terminal. The first contact piece is connected to the power switch 12 and then connected to the first power connection terminal, and the second contact piece is connected to the second power connection terminal; the MOS control circuit 16 is connected between the first load connection terminal and the second load connection terminal; the heating part 13 is connected between the first load connection terminal and the MOS control circuit 16.

[0031] The MOS control circuit 16 includes a voltage stabilizing circuit (this name is only for the convenience of distinction and does not limit its function), a voltage reducing circuit (this name is only for the convenience of distinction and does not limit its function) and an N-type MOS tube.

[0032] The voltage stabilizing circuit includes a voltage stabilizer (such as voltage stabilizer TL431), the reference electrode of the voltage stabilizer is connected to the first load connection terminal of the bridge rectifier module 15 after being connected in series with a resistor, the cathode of the voltage stabilizer is connected to the G electrode of the N-type MOS tube, and the anode of the voltage stabilizer is connected to the D electrode of the N-type MOS tube.

[0033] Specifically, the voltage stabilizing circuit may include a voltage stabilizer, a resistor R13, a resistor R16, a resistor R19 and a capacitor C8. The first load connection end of the bridge rectifier module 15 is connected in series with the resistor R13 and the resistor R16, and then connected to the reference electrode of the voltage stabilizer; the first load connection end of the bridge rectifier module 15 is connected in series with the resistor R13 and the resistor R16, and then connected in series with the resistor R19, and then connected to the anode of the voltage stabilizer, and the capacitor C8 is connected in parallel at both ends of the resistor R19 to form an RC filter circuit; the cathode of the voltage stabilizer is connected to the G electrode of the N-type MOS tube, and the anode of the voltage stabilizer is connected to the D electrode of the N-type MOS tube.

[0034] The resistance values ​​of the resistors R13 and R16 are both 510K, and the resistance value of the resistor R19 can be calculated according to the set threshold value and the 2.5V comparison voltage (ie, the reference threshold value) in the voltage regulator.

[0035] Take the load with rated working voltage of 120V (frequency 60Hz) and power supply of 220V, 50Hz as an example calculation:

[0036] Heat generation: Q = I 2 Rt=U 2 *t / R;

[0037] Under 120V AC power supply, the peak Frequency f1 = 60Hz, the heat generated within 1s is:

[0038]

[0039] Under 220V AC power supply, the peak Frequency f2 = 50Hz, according to the symmetry characteristics of the circuit and the sine wave, the heat generated in 1s is:

[0040]

[0041] Let Q1 = Q2, calculate a is about 0.8105, the corresponding voltage is 225.45V, keep R13 and R16 unchanged, because the reference voltage is 2.5V, calculate by resistor divider:

[0042] 2.5=225.45*R19 / (R13+R16+R19), (3)

[0043] R19 is calculated to be approximately 11.4KΩ.

[0044] The first end of the step-down circuit is connected to the first load connection end of the bridge rectifier module 15, and the second end of the step-down circuit is connected to the G pole of the N-type MOS tube. The second end of the step-down circuit is connected to the D pole of the N-type MOS tube after RC filtering.

[0045] Specifically, the step-down circuit includes a resistor R14, a resistor R17, a resistor R18 and a capacitor C7. The first load connection end of the bridge rectifier module 15 is connected in series with the resistor R14 and the resistor R17, and then connected to the G pole of the N-type MOS tube; the first load connection end of the bridge rectifier module 15 is connected in series with the resistor R14 and the resistor R17, and then connected in series with the resistor R18, and then connected to the D pole of the N-type MOS tube, and the capacitor C7 is connected in parallel at both ends of the resistor R18 to form an RC filter circuit. For example, the resistance values ​​of the resistor R14 and the resistor R17 are both 510K, and the resistance value of the resistor R18 is 10K.

[0046] As for the N-type MOS tube, its S pole is connected to the load circuit, and its D pole is connected to the second load connection terminal of the bridge rectifier module 15. And, the D pole of the N-type MOS tube is grounded.

[0047] Then, when the voltage provided by the reference electrode in the voltage regulator is higher than the reference threshold (the reference threshold is 2.5V, which is the value corresponding to the set threshold after being partially stepped down by the voltage stabilizing circuit. The voltage provided by the reference electrode is higher than the reference threshold, which means that the input voltage is higher than the set threshold), its anode and cathode are turned on, thereby lowering the voltage of the N-type MOS tube, disconnecting the D and S poles of the N-type MOS tube, thereby disconnecting the entire load circuit and making the load circuit stop working; when the input voltage is less than the set threshold (the voltage provided by the reference electrode is less than 2.5V at this time), the load circuit resumes working, so that the multi-power supply hanging ironing machine can reliably operate normally under different power supply voltages.

[0048] In order to ensure the safety of the heating part 13, the heating part 13 may include a heating element 131 and a temperature fuse 132 connected in series. The temperature fuse 132 may be fused when the heating part 13 is overheated, thereby protecting the multi-power supply garment steamer.

[0049] In order to maintain a certain temperature level when the multi-power garment steamer is working, the heating part 13 also includes a thermostat 133. The thermostat 133 is connected in series with the heating element 131 and the temperature fuse 132 to achieve temperature control.

[0050] The water supply unit 14 may include a diode 141 and a water pump 142 . The diode 141 and the water pump 142 (pulse pump) of the water supply unit are connected in series. The diode 141 allows half a cycle of the alternating current (sine wave) to pass through to power the water pump 142 and ensure the normal operation of the water pump 142 .

[0051] In summary, the embodiment of the present application provides a MOS-based multi-power supply garment steamer control circuit and a multi-power supply garment steamer. After the first contact piece of the power connector 11 in the MOS-based multi-power supply garment steamer control circuit is connected in series with the power switch 12, the first branch (the first branch is connected in series with the water supply part 14) and the second branch (the second branch is connected in series with the bridge rectifier module 15 and the heating part 13) are connected in parallel. The first branch and the second branch are merged to form a load circuit. The load circuit is connected to the MOS control circuit 16, and then returns to the second contact piece through the bridge rectifier module 15 to form a MOS-based multi-power supply garment steamer control circuit. By using the MOS control circuit 16, the connection between the load circuit and the second contact piece can be disconnected when the peak value of the working voltage exceeds the set threshold value. When the peak value of the working voltage does not exceed the set threshold value, the connection between the load circuit and the second contact piece is maintained. Therefore, under the condition of a high voltage power supply, the characteristics of the alternating current sinusoidal wave (periodic gradual increase and gradual decrease) can be utilized. When the peak voltage at the current moment does not exceed the set threshold value, the load circuit is kept working. When the peak voltage at the current moment exceeds the set threshold value, the load circuit is stopped working. Under the condition of low voltage power supply, the peak voltage at any time will not exceed the set threshold value, and it can work normally. Therefore, the multi-power supply garment steamer control circuit based on MOS can be used to select components that can meet the normal operation under the set power supply voltage, so as to realize the normal operation of the multi-power supply garment steamer under different power supply voltages.

[0052] The heating part 13 includes a heating element 131, a temperature fuse 132, and a temperature controller 133 connected in series. The temperature fuse 132 can be melted when overheated to protect the multi-power hanging ironing machine, and the temperature controller 133 can control the temperature of the heating element 131 to maintain a relatively stable level. The diode 141 of the water supply part 14 is connected in series with the water pump 142 (pulse pump). The diode 141 allows half a cycle of the alternating current (sine wave) to pass through, supplying power to the water pump 142 to ensure the normal operation of the water pump 142, so there is no need for rectification. The bridge rectifier module 15 is 4 large-current diodes, which rectifies the AC waveform into a unidirectional waveform for easy control of the MOS tube, and the MOS control circuit 16 includes a voltage stabilizing circuit, a step-down circuit and an N-type MOS tube. The resistor R14, the resistor R17, the resistor R18 and the capacitor C7 of the step-down circuit form a simple step-down voltage stabilizing source, which provides a stable driving voltage for the gate of the N-type MOS tube, so that the gate voltage of Q3 is lower than 20V, preferably about 10V. The voltage regulator, resistor R13, resistor R16, resistor R19 and capacitor C8 of the voltage stabilization circuit, after the designed circuit connection scheme, C8 and R19 form an RC filter circuit. Referring to the definition of AC effective value, the principle of equal heat power per unit time, when the voltage provided by the reference electrode in the voltage regulator is higher than the reference threshold (the reference threshold is 2.5V, which is the value corresponding to the set threshold after the voltage regulator circuit partially steps down, and the voltage provided by the reference electrode is higher than the reference threshold, indicating that the input voltage is higher than the set threshold), that is, the anode and cathode are turned on, thereby lowering the voltage of the N-type MOS tube, disconnecting the D and S poles of the N-type MOS tube, thereby disconnecting the entire load circuit and making the load circuit inoperative; when the input voltage is less than the set threshold (the voltage provided by the reference electrode is less than 2.5V at this time), the load circuit resumes working, and the resistance values ​​of R13, R16, and R19 are reasonably adjusted by using the principle of equal heat generation, the voltage value is set, and the resistance value of resistor R19 is calculated to be 11.4K. In this way, the normal operation of the multi-power supply hanging iron under different power supply voltages can be reliably achieved.

[0053] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A MOS-based multi-power steamer control circuit, characterized in that: Including power switch, load circuit, bridge rectifier module and MOS control circuit, The power switch is connected to the load circuit, and the load circuit includes a first branch and a second branch connected in parallel. The first branch is connected in series with a water supply part, and the second branch is connected to a bridge rectifier module. The bridge rectifier module is connected in series with a heating part. The load circuit is connected to the MOS control circuit, and the MOS control circuit is connected to the bridge rectifier module to form a MOS-based multi-power supply garment steamer control circuit; wherein the MOS control circuit is used to determine whether to disconnect the load circuit according to whether the peak value of the working voltage exceeds a set threshold, so as to realize the normal operation of the multi-power supply garment steamer under different power supply voltages.

2. The MOS-based multi-power supply steamer control circuit according to claim 1, characterized in that: The MOS-based multi-power supply garment steamer control circuit also includes a power connector. The power connector includes a first contact piece and a second contact piece; The first contact piece is connected to the power switch, and the second contact piece is connected to the bridge rectifier module.

3. The MOS-based multi-power supply steamer control circuit according to claim 2, characterized in that: The bridge rectifier module includes four diodes and has two power connection terminals and two load connection terminals. The power switch is connected between the first contact piece and the first power connection terminal, and the second contact piece is connected to the second power connection terminal; The MOS control circuit is connected between the first load connection terminal and the second load connection terminal; The heat generating unit is connected between the first load connecting terminal and the MOS control circuit.

4. The MOS-based multi-power supply steamer control circuit according to claim 3, characterized in that: The MOS control circuit includes a voltage stabilizing circuit, a voltage reducing circuit and an N-type MOS tube. The voltage stabilization circuit comprises a voltage stabilizer, wherein a reference electrode of the voltage stabilizer is connected to a first load connection terminal of the bridge rectifier module via a series resistor, a cathode of the voltage stabilizer is connected to a G electrode of the N-type MOS tube, and an anode of the voltage stabilizer is connected to a D electrode of the N-type MOS tube; The first end of the step-down circuit is connected to the first load connection end of the bridge rectifier module, the second end of the step-down circuit is connected to the G pole of the N-type MOS tube, and the second end of the step-down circuit is connected to the D pole of the N-type MOS tube via the RC filter circuit; The S pole of the N-type MOS tube is connected to the load circuit, and the D pole of the N-type MOS tube is connected to the second load connection end of the bridge rectifier module.

5. The MOS-based multi-power supply steamer control circuit according to claim 4, characterized in that: The voltage stabilizing circuit further includes a resistor R13, a resistor R16, a resistor R19 and a capacitor C8. The first load connection end of the bridge rectifier module is connected in series with the resistor R13 and the resistor R16, and the resistor R16 is connected to the reference electrode of the voltage regulator; The first load connection end of the bridge rectifier module is connected in series with the resistor R13, the resistor R16, and the resistor R19, the resistor R19 is connected to the anode of the voltage regulator, and the capacitor C8 is connected in parallel at both ends of the resistor R19 to form an RC filter circuit; The cathode of the voltage regulator is connected to the G pole of the N-type MOS tube, and the anode of the voltage regulator is connected to the D pole of the N-type MOS tube.

6. The MOS-based multi-power supply steamer control circuit according to claim 4, characterized in that: The step-down circuit includes a resistor R14, a resistor R17, a resistor R18 and a capacitor C7. The first load connection end of the bridge rectifier module is connected in series with the resistor R14 and the resistor R17, and the resistor R17 is connected to the G pole of the N-type MOS tube; The first load connection end of the bridge rectifier module is connected in series with the resistor R14, the resistor R17, and the resistor R18, the resistor R18 is connected to the D pole of the N-type MOS tube, and the capacitor C7 is connected in parallel at both ends of the resistor R18 to form an RC filter circuit.

7. The MOS-based multi-power supply garment steamer control circuit according to claim 1, characterized in that: The heating part includes a heating element and a temperature fuse connected in series.

8. The MOS-based multi-power supply steamer control circuit according to claim 7, characterized in that: The heating unit further includes a thermostat, which is connected in series with the heating element and the temperature fuse.

9. The MOS-based multi-power supply garment steamer control circuit according to claim 1, characterized in that: The water supply unit includes a diode and a water pump connected in series.

10. A multi-power garment steamer, characterized in that: It comprises a MOS-based multi-power supply garment steamer control circuit as described in any one of claims 1-9, wherein the MOS-based multi-power supply garment steamer control circuit is built into the multi-power supply garment steamer, and the multi-power supply garment steamer can operate normally under different power supply voltages through the MOS-based multi-power supply garment steamer control circuit.

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