Multi-path power supply switching device

Abstract

The utility model discloses a multipath power supply switching device, and relates to the technical field of power supply switching. The utility model comprises a box body, a switching circuit board, at least two groups of input terminal pairs and at least two groups of output terminal pairs, wherein an accommodating cavity is arranged in the box body. The switching circuit board is located in the accommodating cavity, and the switching circuit board comprises a switch switching circuit. Each input terminal pair is coupled with the input end of the switch switching circuit, and each input terminal pair is electrically connected with each power supply. And each output terminal pair is coupled with the output end of the switch switching circuit, and each output terminal pair is electrically connected with the test equipment, so that the voltage supply value of the test equipment is controlled through the switch switching circuit. Therefore, when the test equipment needs to switch different power supplies, the switch adjustment operation in the switch switching circuit can be executed. Therefore, the power supply connector of the probe seat does not need to be manually screwed and taken, and the power supply switching duration and the power supply switching difficulty are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of power conversion technology, and in particular to a multi-channel power conversion device. Background Technology

[0002] With the development of electronic devices, the demand for electrical failure analysis systems for detecting electronic devices is also increasing. These systems are often integrated into electron microscopes, such as enhanced thermal emission lock-on microscopes, and are used to locate minute electrical defects in electronic devices that affect yield, performance, or operational stability.

[0003] To accommodate the power supply of electrical failure analysis systems, the corresponding test equipment typically has multiple power supplies, such as 3000V, 40V, and 20V. When testing different electronic components, switching the power supply requires the user to manually unscrew the power connector on the probe holder and connect it to a different power supply interface. This results in a time-consuming interface switching operation, and the limited operating space within the test equipment further complicates the process. Utility Model Content

[0004] In view of the problems of long operation time and high difficulty in manually changing power interfaces, this utility model is proposed to provide a multi-channel power adapter that overcomes or at least partially solves the above problems.

[0005] This utility model provides a multi-channel power adapter, the adapter comprising:

[0006] The box body has a receiving cavity inside, and the box body includes a first side and a second side.

[0007] An adapter circuit board is located within the accommodating cavity, and the adapter circuit board includes a switch adapter circuit.

[0008] At least two sets of input terminal pairs, each of the input terminal pairs being coupled to the input terminal of the switch circuit, and each input terminal pair being electrically connected to each power supply.

[0009] At least two sets of output terminal pairs, each of which is coupled to the output terminal of the switch-transfer circuit, and each output terminal pair is electrically connected to the test equipment, so as to control the voltage supply value to the test equipment through the switch-transfer circuit.

[0010] An optional utility model embodiment, wherein the switching circuit comprises:

[0011] The first double-pole single-throw switch, wherein the first contact pair of the first double-pole single-throw switch is coupled between the negative terminal of the first set of input terminal pairs and the negative terminal of the first set of output terminal pairs;

[0012] The first indicator light is connected in series with the second contact pair of the first double-pole single-throw switch. When the first double-pole single-throw switch is closed, the first indicator light is lit to indicate that the first set of input terminal pairs and the first set of output terminal pairs are electrically connected.

[0013] The second double-pole single-throw switch, wherein the first contact pair of the second double-pole single-throw switch is coupled between the negative terminal of the second set of input terminal pairs and the negative terminal of the second set of output terminal pairs;

[0014] The second indicator light is connected in series with the second contact pair of the second double-pole single-throw switch. When the second double-pole single-throw switch is closed, the second indicator light illuminates to indicate that the second set of input terminal pairs and the second set of output terminal pairs are electrically connected.

[0015] In one optional utility model, the first indicator light and the second indicator light are respectively embedded in the side of the box body.

[0016] In one optional utility model, the first double-pole single-throw switch and the second double-pole single-throw switch are respectively embedded in the side of the box.

[0017] In one optional utility model, the switch transfer circuit further includes a first current-limiting resistor and a second current-limiting resistor, wherein the first current-limiting resistor is connected in series with the first indicator light, and the second current-limiting resistor is connected in series with the second indicator light.

[0018] In one optional utility model, the switching circuit further includes:

[0019] The third double-pole single-throw switch, wherein the first contact pair of the third double-pole single-throw switch is coupled between the negative terminal of the third set of input terminal pairs and the negative terminal of the third set of output terminal pairs;

[0020] The third indicator light is connected in series with the second contact pair of the third double-pole single-throw switch. When the third double-pole single-throw switch is closed, the third indicator light illuminates to indicate that the third set of input terminal pairs and the third set of output terminal pairs are electrically connected.

[0021] An optional utility model embodiment states that the third indicator light is embedded in the side of the housing.

[0022] In one optional utility model, the third double-pole single-throw switch is embedded in the side of the housing.

[0023] In one optional utility model, the switch transfer circuit further includes a third current-limiting resistor, which is connected in series with the third indicator light.

[0024] An optional utility model includes a multi-power adapter that further includes at least one hook with a hanging hole inside.

[0025] The hook is located on the outer side of the box body to form the attachment of the multi-power adapter.

[0026] One optional utility model embodiment involves the box body being made of metal and welded to the hook; or,

[0027] The box and the hook are an integral structure.

[0028] In one optional utility model, at least one heat dissipation hole is provided on the side of the box body, and the heat dissipation hole is connected to the air passage of the accommodating cavity.

[0029] Compared with existing technologies, this utility model includes a housing, an adapter circuit board, at least two sets of input terminal pairs, and at least two sets of output terminal pairs. The housing contains a receiving cavity. The adapter circuit board is located within the receiving cavity and includes a switching adapter circuit. Each input terminal pair is coupled to the input terminal of the switching adapter circuit and is electrically connected to a power supply. Each output terminal pair is coupled to the output terminal of the switching adapter circuit and is electrically connected to a test device, thereby controlling the voltage supplied to the test device through the switching adapter circuit. This allows for switching adjustments via the switching adapter circuit when the test device needs to switch to different power supplies. Consequently, manually unscrewing the power connector of the probe holder is unnecessary, significantly reducing power switching time and difficulty.

[0030] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0032] In the attached diagram:

[0033] Figure 1 This is a three-dimensional structural diagram of a multi-channel power adapter provided in an embodiment of this utility model;

[0034] Figure 2 This is a schematic diagram of a switch transfer circuit provided in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of another switch-transfer circuit provided in this embodiment of the present invention;

[0036] Figure 4 This is a front view structural diagram of a multi-channel power adapter provided in an embodiment of this utility model;

[0037] Figure 5 This is a rear view structural diagram of a multi-channel power adapter provided in an embodiment of the present utility model;

[0038] Reference numerals in the attached diagram: 1. Box body; 101. Heat dissipation hole; 2. Switching circuit; 201. First double-pole single-throw switch; 202. First indicator light; 203. Second double-pole single-throw switch; 204. Second indicator light; 205. First current-limiting resistor; 206. Second current-limiting resistor; 207. Third double-pole single-throw switch; 208. Third indicator light; 209. Third current-limiting resistor; 3. Input terminal pair; 4. Output terminal pair; 5. Hook; 501. Hanging hole. Detailed Implementation

[0039] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0040] With the development of electronic devices, the demand for electrical failure analysis systems for detecting electronic devices is also increasing. These systems are often integrated into electron microscopes, such as enhanced thermal emission lock-on microscopes, and are used to locate minute electrical defects in electronic devices that affect yield, performance, or operational stability.

[0041] To accommodate the power supply of electrical failure analysis systems, the corresponding test equipment typically has multiple power supplies, such as 3000V, 40V, and 20V. When testing different electronic components, switching the power supply requires the user to manually unscrew the power connector on the probe holder and connect it to a different power supply interface. This results in a time-consuming interface switching operation, and the limited operating space within the test equipment further complicates the process.

[0042] Based on the aforementioned technical problems, this utility model embodiment is proposed. This utility model embodiment may include a housing 1, an adapter circuit board, at least two sets of input terminal pairs 3, and at least two sets of output terminal pairs 4. The housing 1 contains a receiving cavity. The adapter circuit board is located within the receiving cavity and includes a switch adapter circuit 2. Each input terminal pair 3 is coupled to the input terminal of the switch adapter circuit 2, and each input terminal pair 3 is electrically connected to a power supply. Each output terminal pair 4 is coupled to the output terminal of the switch adapter circuit 2, and each output terminal pair 4 is electrically connected to a test device, so as to control the voltage supply to the test device through the switch adapter circuit 2. Therefore, when the test device needs to switch to different power supplies, the switching adjustment operation in the switch adapter circuit 2 can be performed. This eliminates the need to manually unscrew the power connector of the probe socket, greatly reducing the power switching time and difficulty.

[0043] Reference Figure 1-5 This utility model provides a multi-channel power adapter, which may include a housing 1, an adapter circuit board, at least two sets of input terminal pairs 3, and at least two sets of output terminal pairs 4. The housing 1 has a receiving cavity. The adapter circuit board is located within the receiving cavity and includes a switch adapter circuit 2. Each input terminal pair 3 is coupled to the input terminal of the switch adapter circuit 2, and each input terminal pair 3 is electrically connected to a power supply. Each output terminal pair 4 is coupled to the output terminal of the switch adapter circuit 2, and each output terminal pair 4 is electrically connected to a test device, so as to control the voltage supplied to the test device through the switch adapter circuit 2.

[0044] In this embodiment of the invention, the box body 1 can be a cube or a cuboid structure. The box body 1 may have an accommodating cavity. For example, the box body 1 may include multiple plates, which are spliced ​​and fixed together to form the box body 1 with the accommodating cavity. For example, two adjacent plates can be detachably connected by screws. The adapter circuit board is located within the accommodating cavity and may integrate a switch adapter circuit 2. The switch adapter circuit 2 includes at least a control switch. The input terminal of the switch adapter circuit 2 is coupled to each input terminal pair 3, and the output terminal of the switch adapter circuit 2 is coupled to each output terminal pair 4. Each terminal pair may include a positive terminal and a negative terminal.

[0045] Correspondingly, each input terminal pair 3 is coupled to a different power supply, and each output terminal pair 4 is coupled to a different power supply interface of the test equipment. The switch-transfer circuit 2 is used to control the circuit connection and disconnection between the different output terminal pairs 4 and the input terminal pairs 3. Users can adjust the input voltage to the test equipment by operating the control switch in the switch-transfer circuit 2. Furthermore, switching operations are not required in the confined space of the test equipment, greatly reducing the difficulty of power supply switching.

[0046] Furthermore, users no longer need to manually unscrew the power connector on the probe holder, connect it to the corresponding power supply interface, and then close the switch when switching the supply voltage value of the test equipment. This avoids damage to the power connector of the test equipment caused by frequent plugging and unplugging, and also avoids problems such as poor contact at the power interface of the test equipment affecting the accuracy of test results of electronic devices.

[0047] An optional embodiment of the utility model, referring to... Figure 2 and Figure 3 As shown, the switch transfer circuit 2 may include a first double-pole single-throw switch 201, a first indicator light 202, a second double-pole single-throw switch 203, and a second indicator light 204. The first contact pair of the first double-pole single-throw switch 201 is coupled between the negative terminals of the first set of input terminal pairs 3 and the negative terminals of the first set of output terminal pairs 4. The first indicator light 202 is connected in series with the second contact pair of the first double-pole single-throw switch 201. When the first double-pole single-throw switch 201 is closed, the first indicator light 202 illuminates to indicate that the first set of input terminal pairs 3 and the first set of output terminal pairs 4 are electrically connected.

[0048] The first contact pair of the second double-pole single-throw switch 203 is coupled between the negative terminal of the second set of input terminal pair 3 and the negative terminal of the second set of output terminal pair 4. The second indicator light 204 is connected in series with the second contact pair of the second double-pole single-throw switch 203. When the second double-pole single-throw switch 203 is closed, the second indicator light 204 illuminates to indicate that the second set of input terminal pair 3 and the second set of output terminal pair 4 are electrically connected.

[0049] In this embodiment of the invention, the switch transfer circuit 2 may include a first double-pole single-throw switch 201, a first indicator light 202, a second double-pole single-throw switch 203, and a second indicator light 204. The first indicator light 202 and the second indicator light 204 may be LEDs (Light Emitting Diodes). The double-pole single-throw switch may include two pairs of contacts and a switch structure. Each pair of contacts includes a moving contact and a stationary contact. The switch structure is electrically connected to the two moving contacts, and when the switch structure is activated, it can control the circuit connection between the moving contact and the stationary contact, thereby controlling the circuit connection between each input terminal pair 3 and each output terminal pair 4.

[0050] Specifically, the first contact pair of the first double-pole single-throw switch 201 is coupled between the negative terminals of the first set of input terminal pairs 3 and the first set of output terminal pairs 4. Therefore, the circuit connection between the first set of input terminal pairs 3 and the first set of output terminal pairs 4 can be controlled by the first double-pole single-throw switch 201. The first indicator light 202 is connected in series with the second contact pair of the first double-pole single-throw switch 201. For example, the negative terminal of the first indicator light 202 is coupled to the negative power supply terminal of the device, the positive terminal of the first indicator light 202 is coupled to the moving contact of the second contact pair of the first double-pole single-throw switch 201, and the stationary contact of the second contact pair of the first double-pole single-throw switch 201 is coupled to the positive power supply terminal of the device. Thus, the circuit connection of the first indicator light 202 can be controlled by the first double-pole single-throw switch 201.

[0051] When the first double-pole single-throw switch 201 is closed, the first set of input terminal pairs 3 and the first set of output terminal pairs 4 form a closed loop. The voltage supplied by the test equipment is the voltage connected to the first set of input terminal pairs 3. The first set of input terminal pairs 3 receives a high-voltage power supply, for example, a voltage range of -3000V to +3000V. At this time, the first indicator light 202 illuminates due to the closed loop. When the user observes the first indicator light 202 illuminated, they can confirm that the corresponding power supply loop is closed.

[0052] When the first double-pole single-throw switch 201 is in the open state, the circuit formed by the first group of input terminal pairs 3 and the first group of output terminal pairs 4 is broken, and the circuit of the first indicator light 202 is broken. If the user observes that the first indicator light 202 is not lit, he can determine that the corresponding power supply circuit is broken.

[0053] The first contact pair of the second double-pole single-throw switch 203 is coupled between the negative terminal of the second set of input terminal pair 3 and the negative terminal of the second set of output terminal pair 4. Therefore, the circuit connection between the second set of input terminal pair 3 and the second set of output terminal pair 4 can be controlled by the second double-pole single-throw switch 203. The second indicator light 204 is connected in series with the second contact pair of the second double-pole single-throw switch 203. For example, the negative terminal of the second indicator light 204 is coupled to the negative terminal of the device's power supply, the positive terminal of the second indicator light 204 is coupled to the moving contact of the second contact pair of the second double-pole single-throw switch 203, and the stationary contact of the second contact pair of the second double-pole single-throw switch 203 is coupled to the positive terminal of the device's power supply. Thus, the circuit connection of the second indicator light 204 can be controlled by the second double-pole single-throw switch 203.

[0054] When the second double-pole single-throw switch 203 is in the closed state, the second set of input terminal pairs 3 and the second set of output terminal pairs 4 form a closed loop. The voltage supplied by the test equipment is a first low-voltage power supply input to the second set of input terminal pairs 3, for example, the voltage range of the first low-voltage power supply is -40V to +40V. At this time, the second indicator light 204 illuminates due to the closed loop. When the user observes the second indicator light 204 lighting up, they can confirm that the corresponding power supply loop is closed.

[0055] When the second double-pole single-throw switch 203 is in the open state, the circuit formed by the second set of input terminal pairs 3 and the second set of output terminal pairs 4 is broken, and the circuit of the second indicator light 204 is broken. If the user observes that the second indicator light 204 is not lit, he can determine that the corresponding power supply circuit is broken.

[0056] Since the testing equipment only requires one power supply during the testing process, it is possible to ensure that only the indicator light corresponding to the required voltage value is lit by operating the first double-pole single-throw switch 201 and the second double-pole single-throw switch 203 during operation.

[0057] An optional embodiment of the utility model, referring to... Figure 1 and Figure 4 As shown, the first indicator light 202 and the second indicator light 204 are respectively embedded in the side of the box body 1.

[0058] In this embodiment of the invention, to improve the user's ease of observation, the first indicator light 202 and the second indicator light 204 are respectively embedded in the side of the housing 1. For example, corresponding light holes can be opened on the side of the housing 1, and the adapter circuit board can be mounted against the inner surface of the housing 1, so that the user can clearly observe the changes of the first indicator light 202 and the second indicator light 204.

[0059] An optional embodiment of the utility model, referring to... Figure 1 and Figure 4 As shown, the first double-pole single-throw switch 201 and the second double-pole single-throw switch 203 are respectively embedded in the side of the box 1.

[0060] In this embodiment of the invention, the first double-pole single-throw switch 201 and the second double-pole single-throw switch 203 can also be embedded in the side of the housing 1. For example, corresponding switch holes can be provided on the side of the housing 1, so that when the adapter circuit board is installed on the inner surface of the housing 1, it is convenient for the user to operate the first double-pole single-throw switch 201 or the second double-pole single-throw switch 203.

[0061] In a preferred embodiment, the first indicator light 202, the second indicator light 204, the first double-pole single-throw switch 201, and the second double-pole single-throw switch 203 can be located on the same side of the housing 1, and this side can be used as the front of the device. During the use of the device, the front can face the user, which makes it easier for the user to operate the switches and observe the changes in the indicator lights.

[0062] An optional embodiment of the utility model, referring to... Figure 3 As shown, the switch transfer circuit 2 further includes a first current-limiting resistor 205 and a second current-limiting resistor 206. The first current-limiting resistor 205 is connected in series with the first indicator light 202, and the second current-limiting resistor 206 is connected in series with the second indicator light 204.

[0063] In this embodiment of the invention, the first current-limiting resistor 205 is connected in series with the first indicator light 202. For example, one end of the first current-limiting resistor 205 can be coupled to the positive terminal of the first indicator light 202, and the other end of the first current-limiting resistor 205 can be coupled to the moving contact of the second contact of the first double-pole single-throw switch 201. Therefore, the first current-limiting resistor 205 can limit the current and divide the voltage in the circuit formed by the first indicator light 202, thereby preventing overcurrent or overvoltage caused by voltage fluctuations in the first indicator light 202 and improving its service life.

[0064] The second current-limiting resistor 206 is connected in series with the second indicator light 204. For example, one end of the second current-limiting resistor 206 can be coupled to the positive terminal of the second indicator light 204, and the other end can be coupled to the moving contact of the second contact pair of the second double-pole single-throw switch 203. Thus, the second current-limiting resistor 206 can limit the current and divide the voltage in the circuit formed by the second indicator light 204, thereby preventing overcurrent or overvoltage caused by voltage fluctuations in the second indicator light 204 and improving its service life.

[0065] An optional embodiment of the utility model, referring to... Figure 2 and Figure 3 As shown, the switch transfer circuit 2 may further include a third double-pole single-throw switch 207 and a third indicator light 208. The first contact pair of the third double-pole single-throw switch 207 is coupled between the negative terminals of the third set of input terminal pairs 3 and the negative terminals of the third set of output terminal pairs 4. The third indicator light 208 is connected in series with the second contact pair of the third double-pole single-throw switch 207. When the third double-pole single-throw switch 207 is closed, the third indicator light 208 illuminates to indicate that the third set of input terminal pairs 3 and the third set of output terminal pairs 4 are electrically connected.

[0066] In this embodiment of the invention, the first contact pair of the third double-pole single-throw switch 207 is coupled between the negative terminals of the third set of input terminal pairs 3 and the third set of output terminal pairs 4. Therefore, the circuit connection between the third set of input terminal pairs 3 and the third set of output terminal pairs 4 can be controlled by the third double-pole single-throw switch 207. The third indicator light 208 is connected in series with the second contact pair of the third double-pole single-throw switch 207. For example, the negative terminal of the third indicator light 208 is coupled to the negative power supply terminal of the device, the positive terminal of the third indicator light 208 is coupled to the moving contact of the second contact pair of the third double-pole single-throw switch 207, and the stationary contact of the second contact pair of the third double-pole single-throw switch 207 is coupled to the positive power supply terminal of the device. Thus, the circuit connection of the third indicator light 208 can be controlled by the third double-pole single-throw switch 207.

[0067] When the third double-pole single-throw switch 207 is closed, the third set of input terminal pairs 3 and the third set of output terminal pairs 4 form a closed loop. The voltage supplied by the test equipment is a second low-voltage power supply input to the third set of input terminal pairs 3, for example, the voltage range of the second low-voltage power supply is -20V to +20V. At this time, the third indicator light 208 illuminates due to the closed loop. When the user observes the third indicator light 208 illuminating, they can confirm that the corresponding power supply loop is closed.

[0068] When the third double-pole single-throw switch 207 is in the open state, the circuit formed by the third set of input terminal pairs 3 and the third set of output terminal pairs 4 is broken, and the circuit of the third indicator light 208 is broken. If the user observes that the third indicator light 208 is not lit, the user can determine that the corresponding power supply circuit is broken.

[0069] An optional embodiment of the utility model, referring to... Figure 1 and Figure 4 As shown, the third indicator light 208 is embedded in the side of the box 1.

[0070] In this embodiment of the invention, to improve the user's ease of observation, the third indicator light 208 and the second indicator light 204 are respectively embedded in the side of the housing 1. This allows the user to clearly observe the changes in the third indicator light 208.

[0071] An optional embodiment of the utility model, referring to... Figure 1 and Figure 4 As shown, the third double-pole single-throw switch 207 is embedded in the side of the housing 1.

[0072] In this embodiment of the utility model, a corresponding switch hole may be provided on the side of the box body 1. When the adapter circuit board is installed on the inner surface of the box body 1, the third double-pole single-throw switch 207 is embedded in the switch hole, which makes it convenient for the user to operate the third double-pole single-throw switch 207.

[0073] An optional embodiment of the utility model, referring to... Figure 3 As shown, the switch transfer circuit 2 also includes a third current-limiting resistor 209, which is connected in series with the third indicator light 208.

[0074] In this embodiment of the invention, the third current-limiting resistor 209 is connected in series with the third indicator light 208. For example, one end of the third current-limiting resistor 209 can be coupled to the positive terminal of the third indicator light 208, and the other end of the third current-limiting resistor 209 can be coupled to the moving contact of the second contact pair of the third double-pole single-throw switch 207. Therefore, the third current-limiting resistor 209 can limit the current and divide the voltage in the circuit formed by the third indicator light 208, thereby preventing voltage fluctuations from causing overcurrent or overvoltage in the third indicator light 208 and improving its service life.

[0075] In some embodiments, to facilitate user differentiation between the device's output voltage and the corresponding indicator light, voltage markings can be provided on the corresponding output terminal pairs 4. For example, the voltage markings could be 3000V, 40V, and 20V. The output terminal pairs 4 and corresponding indicator lights for different voltages are arranged side-by-side. For example, the first set of output terminal pairs 4 corresponding to a high-voltage power supply is arranged side-by-side with the first indicator light 202. The second set of output terminal pairs 4 corresponding to a first low-voltage power supply is arranged side-by-side with the second indicator light 204. The third set of output terminal pairs 4 corresponding to a second low-voltage power supply is arranged side-by-side with the third indicator light 208.

[0076] An optional embodiment of the utility model, referring to... Figure 1 , Figure 4 as well as Figure 5 As shown, the multi-channel power adapter also includes at least one hook 5, and the hook 5 has a hanging hole 501. The hook 5 is located on the outer side of the box body 1, so as to form the hook for attaching the multi-channel power adapter.

[0077] In this embodiment of the invention, the hook 5 is used to attach the multi-channel power adapter to the testing equipment. The hook 5 has a hanging hole 501. The hook 5 is located on the outer surface of the housing 1; for example, the hook 5 can be a plate-like structure. The hanging hole 501 can be inserted into the support frame or other components of the testing equipment to attach the adapter, thereby improving the ease of installation of the adapter.

[0078] In one optional embodiment of the utility model, the box body 1 is made of metal and is welded and fixed to the hook 5. Alternatively, the box body 1 and the hook 5 are an integral structure.

[0079] In this embodiment of the utility model, the box body 1 can be made of metal material, and correspondingly, the hook 5 can also be made of metal material, so that the box body 1 and the hook 5 can be fixed by welding, thereby improving the connection strength between the box body 1 and the hook 5.

[0080] In other embodiments, the box body 1 and the hook 5 can be an integral structure, that is, the box body 1 and the hook 5 can be obtained by an integral molding process, thereby improving the production efficiency of the device.

[0081] An optional embodiment of the utility model, referring to... Figure 5 As shown, at least one heat dissipation hole 101 is provided on the side of the box body 1, and the heat dissipation hole 101 is connected to the air passage of the accommodating cavity.

[0082] In this embodiment of the invention, at least one heat dissipation hole 101 is provided on the side of the housing 1. The heat dissipation hole 101 is connected to the air passage of the accommodating cavity, thereby dissipating the heat generated by the adapter circuit board during operation. For example, multiple heat dissipation holes 101 can be densely arranged to form a mesh distribution.

[0083] In summary, this utility model discloses a multi-power supply adapter. The adapter may include a housing 1, an adapter circuit board, at least two sets of input terminal pairs 3, and at least two sets of output terminal pairs 4. The housing 1 contains a receiving cavity. The adapter circuit board is located within the receiving cavity and includes a switch adapter circuit 2. Each input terminal pair 3 is coupled to the input terminal of the switch adapter circuit 2 and is electrically connected to each power supply. Each output terminal pair 4 is coupled to the output terminal of the switch adapter circuit 2 and is electrically connected to a test device, thereby controlling the voltage supplied to the test device through the switch adapter circuit 2. This allows for the execution of a switching adjustment operation in the switch adapter circuit 2 when the test device needs to switch to different power supplies. Therefore, it is not necessary to manually unscrew the power connector of the probe holder. When in use, the adapter is powered on and the corresponding double-pole single-throw switch is turned on. The probe holder of the test equipment can be powered on and tested without changing the connection position of the probe holder or re-plugging it, which greatly reduces the power switching time and difficulty.

[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0085] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible. Therefore, any combination of the above embodiments is an implementation scheme of this utility model. However, due to space limitations, this specification will not describe them in detail here.

[0086] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0087] Similarly, it should be understood that, in order to simplify the present invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the present invention above, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0088] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A multi-channel power supply adapter, characterized in that, The device includes: Box (1), wherein a receiving cavity is provided inside the box (1); An adapter circuit board is located within the accommodating cavity, and the adapter circuit board includes a switch adapter circuit (2); At least two sets of input terminal pairs (3), each of the input terminal pairs (3) is coupled to the input terminal of the switch circuit (2), and each input terminal pair (3) is electrically connected to each power supply. At least two sets of output terminal pairs (4), each of the output terminal pairs (4) is coupled to the output terminal of the switch transition circuit (2), and each of the output terminal pairs (4) is electrically connected to the test equipment so as to control the voltage supply value to the test equipment through the switch transition circuit (2).

2. The multi-channel power adapter according to claim 1, characterized in that, The switching circuit (2) includes: The first double-pole single-throw switch (201) has a first contact pair coupled between the negative terminal of the first set of input terminal pairs (3) and the negative terminal of the first set of output terminal pairs (4). The first indicator light (202) is connected in series with the second contact of the first double-pole single-throw switch (201). When the first double-pole single-throw switch (201) is closed, the first indicator light (202) lights up to indicate that the first set of input terminal pairs (3) and the first set of output terminal pairs (4) are electrically connected. The second double-pole single-throw switch (203) has its first contact pair coupled between the negative terminal of the second set of input terminal pairs (3) and the negative terminal of the second set of output terminal pairs (4). The second indicator light (204) is connected in series with the second contact of the second double-pole single-throw switch (203). When the second double-pole single-throw switch (203) is closed, the second indicator light (204) lights up to indicate that the second set of input terminal pairs (3) and the second set of output terminal pairs (4) are electrically connected.

3. The multi-channel power adapter according to claim 2, characterized in that, The first indicator light (202) and the second indicator light (204) are respectively embedded in the side of the box (1).

4. The multi-channel power adapter according to claim 2, characterized in that, The first double-pole single-throw switch (201) and the second double-pole single-throw switch (203) are respectively embedded in the side of the box (1).

5. The multi-channel power adapter according to claim 2, characterized in that, The switch circuit (2) further includes a first current-limiting resistor (205) and a second current-limiting resistor (206), wherein the first current-limiting resistor (205) is connected in series with the first indicator light (202), and the second current-limiting resistor (206) is connected in series with the second indicator light (204).

6. The multi-channel power adapter according to claim 2, characterized in that, The switching circuit (2) also includes: The third double-pole single-throw switch (207) has its first contact pair coupled between the negative pole of the third set of input terminal pairs (3) and the negative pole of the third set of output terminal pairs (4). The third indicator light (208) is connected in series with the second contact of the third double-pole single-throw switch (207). When the third double-pole single-throw switch (207) is closed, the third indicator light (208) lights up to indicate that the third set of input terminal pairs (3) and the third set of output terminal pairs (4) are electrically connected.

7. The multi-channel power adapter according to claim 6, characterized in that, The third indicator light (208) is embedded in the side of the box (1).

8. The multi-channel power adapter according to claim 6, characterized in that, The third double-pole single-throw switch (207) is embedded in the side of the box (1).

9. The multi-channel power adapter according to claim 6, characterized in that, The switch transfer circuit (2) further includes a third current-limiting resistor (209), which is connected in series with the third indicator light (208).

10. The multi-channel power adapter according to claim 1, characterized in that, The multi-channel power adapter also includes at least one hook (5), and the hook (5) has a hanging hole (501); The hook (5) is located on the outer side of the box (1) so as to form the hook of the multi-power adapter through the hook (5).

11. The multi-channel power adapter according to claim 10, characterized in that, The box body (1) is made of metal and is welded and fixed to the hook (5); or, The box (1) and the hook (5) are an integral structure.

12. The multi-channel power adapter according to claim 1, characterized in that, The side of the box (1) is provided with a heat dissipation hole (101), which is connected to the air passage of the accommodating cavity.

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