Power supply detection device

Abstract

According to the power supply detection device, a detection circuit is arranged in the device and comprises a resistor and a fuse which are connected in series; one end of the detection circuit is a positive electrode end and is connected with the first leading-out end and the second leading-out end through a first wire and a second wire connected with a diode in series. The other end of the detection circuit is a negative electrode end and is connected with the third leading-out end and the fourth leading-out end through a third wire and a fourth wire connected in series with a diode respectively; the first leading-out terminal and the third leading-out terminal are used for a positive terminal and a negative terminal of a to-be-tested power supply; the second leading-out terminal and the fourth leading-out terminal are used for connecting a positive terminal and a negative terminal of equipment. A device, a to-be-detected power supply and a detection circuit are connected in parallel, and whether the to-be-detected power supply is normal or not is judged by observing whether a resistance wire in the detection circuit is broken down or not. Different power supplies can be detected by changing the specifications of the resistor and the fuse. The power supply problem in a circuit system can be rapidly checked, the test cost is effectively reduced, and the method has very high practicability and wide applicability.

Description

Technical Field

[0001] The invention relates to a detection device, in particular to a power supply detection device, and belongs to the technical field of equipment detection. Background Art

[0002] At present, some equipment is not working properly after the test products are recovered. Analysis shows that the problem is caused by abnormal power supply to the equipment, broken circuit and other reasons. The analysis process is relatively difficult, and it is necessary to carefully check whether the wires are damaged and whether the soldering points are firm.

[0003] Therefore, it is necessary to provide a low-cost and high-efficiency power supply detection device. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, an object of the present invention is to provide a power supply detection device.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A power supply detection device, wherein the device is provided with a detection circuit, including a resistor and a fuse connected in series; One end of the detection circuit is a positive terminal, connected to a first lead-out terminal and a second lead-out terminal through a first wire and a second wire connected in series with a diode respectively; The other end of the detection circuit is a negative terminal, which is connected to a third lead-out terminal and a fourth lead-out terminal through a third wire and a fourth wire connected in series with a diode, respectively; The first lead-out terminal and the third lead-out terminal are used to connect to the positive terminal and the negative terminal of the power supply under test; The second lead-out terminal and the fourth lead-out terminal are used to connect to the positive terminal and the negative terminal of the device.

[0006] The above resistors are replaceable.

[0007] The above fuses are replaceable.

[0008] Furthermore, the fuse is arranged on the top surface of the device via a bridge.

[0009] The first lead-out terminal, the second lead-out terminal, the third lead-out terminal and the second lead-out terminal are all pads.

[0010] Furthermore, the pad is disposed on the top surface of the device.

[0011] The present invention is beneficial in that: The power supply detection device of the present invention connects the device, the power supply to be tested and the detection circuit in parallel, and then determines whether the power supply to be tested is normal by observing whether the resistance wire in the detection circuit is broken down. Different power supplies can also be detected by changing the specifications of the resistor and the fuse.

[0012] A power supply detection device of the present invention utilizes the characteristic of a fuse being melted by a large current flowing therethrough to detect whether the power supply of a circuit is normal. The device has a simple structure and is easy to use. It can quickly troubleshoot power supply problems in a circuit system and is particularly useful for analyzing and verifying the power supply conditions of various devices after product recycling. This effectively reduces test costs and has strong practicality and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a power supply detection device.

[0014] Figure 2 This is the schematic diagram of the power supply detection device.

[0015] The meanings of the marks in the accompanying drawings are as follows: 1. first lead-out terminal, 2. second lead-out terminal, 3. third lead-out terminal, 4. fourth lead-out terminal, 5. resistance wire. DETAILED DESCRIPTION

[0016] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] A power supply detection device is composed of a box body, a fuse, a resistor, a plurality of diodes, a welding pad and a wire.

[0018] The resistor and the fuse are connected in series through a wire to form a detection circuit.

[0019] The detection circuit is connected in parallel with the device and the power supply to be detected through wires.

[0020] Specifically, One end of the detection circuit is the positive terminal, connected to the first and second wires in parallel; wherein the first wire is used to connect to the positive electrode of the power supply to be tested, which is the first lead-out terminal 1; the second wire is used to connect to the positive electrode of the device through a series diode, which is the second lead-out terminal 2.

[0021] The other end of the detection circuit is the negative terminal, connected to the third wire and the fourth wire in parallel; the third wire is used to connect to the negative pole of the power supply to be tested, which is the third lead-out terminal 3; the fourth wire is used to connect to the negative pole of the device through a series diode, which is the fourth lead-out terminal.

[0022] The resistance and the wires (including the first wire, the second wire, the third wire and the fourth wire) of the detection circuit are arranged in the box body, and the resistance wire 5 is arranged on the top surface of the box body through a bridge.

[0023] On both sides of the resistance wire, a pair of pads are provided on the top surface of the box body, which are used to connect the first wire, the second wire, the third wire and the fourth wire respectively. The pads are used to connect the positive and negative electrodes of the power supply and the positive and negative electrodes of the device. That is, each pad is used for the first lead-out terminal 1, the second lead-out terminal 2, the third lead-out terminal 3, and the fourth lead-out terminal 4 for external connection.

[0024] When using, Through the pads, the power supply and device to be tested are connected in parallel with the detection circuit respectively.

[0025] If the power supply is normal, the voltage is detected by using a resistor divider to see if it has reached the rated voltage. When the power supply is activated and the rated voltage and current are reached, the fuse will burn out and the power supply will continue to supply power to the device.

[0026] If the power supply cannot be supplied normally, the resistance wire is normal.

[0027] When testing the next power supply of the same model, replace the resistor wire and repeat the above steps.

[0028] Different power supplies can be detected by changing the specifications of the resistor and fuse.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A power supply detection device, characterized in that: The device is provided with a detection circuit, including a resistor and a fuse connected in series; One end of the detection circuit is a positive terminal, connected to a first lead-out terminal and a second lead-out terminal through a first wire and a second wire connected in series with a diode, respectively; The other end of the detection circuit is a negative terminal, which is connected to a third lead-out terminal and a fourth lead-out terminal through a third wire and a fourth wire connected in series with a diode, respectively; The first lead-out terminal and the third lead-out terminal are used to connect to the positive terminal and the negative terminal of the power supply under test; The second lead-out terminal and the fourth lead-out terminal are used to connect to the positive terminal and the negative terminal of the device.

2. The power supply detection device according to claim 1, characterized in that: The resistor is replaceable.

3. The power supply detection device according to claim 1, characterized in that: The fuse is replaceable.

4. The power supply detection device according to claim 3, characterized in that: The fuse is arranged on the top surface of the device through a bridge.

5. The power supply detection device according to claim 1, characterized in that: The first lead-out terminal, the second lead-out terminal, the third lead-out terminal and the second lead-out terminal are all pads.

6. The power supply detection device according to claim 5, characterized in that: The pad is arranged on the top surface of the device.

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