CN217689025U - Circuit board clamp for verifying starting performance - Google Patents

Abstract

The utility model discloses a circuit board fixture for verifying startup performance, comprising a PCB board, which is provided with a power input end, a triode Q1, a triode Q2, a power output end, an adjustable capacitor C1, an adjustable capacitor C2, an adjustable Capacitor C3 and adjustable capacitor C4, the emitter of the transistor Q1 is connected to the power input terminal, the base of the transistor Q1 is connected to the external control circuit, the collector of the transistor Q1 is connected to the power output terminal, adjustable capacitor C1, adjustable capacitor C2 , After the adjustable capacitor C3 and the adjustable capacitor C4 are connected in parallel, one end is connected between the collector of the transistor Q1 and the output terminal of the power supply, the other end is grounded, the emitter of the transistor Q2 is connected to the input terminal of the power supply, and the base of the transistor Q2 passes through the second The control line is connected with the external control circuit, and the collector of the transistor Q2 is connected with the output end of the power supply. The startup performance of the device to be tested is verified by the power supply in the state of different capacitive loads and no capacitive load, which is easy to implement, low cost and convenient to operate.

Description

A circuit board jig for verifying start-up performance

technical field

The utility model relates to a circuit board fixture for verifying starting performance. It is used to verify whether the device under test can start and work normally under different capacitive loads and no capacitive loads.

Background technique

In order to ensure that the device can work normally, it is necessary to conduct startup verification in different environments, such as the startup capability under extreme conditions such as high temperature and low temperature, and the startup verification with different power adapters, and normal verification cannot perform such extreme verification. , then you need to change your thinking and use a certain method to replace the startup abnormality caused by this extreme environment, and verify the powered equipment through the power supply under different capacitive loads and no capacitive loads, so as to verify Can the device start.

Utility model content

The purpose of this utility model is to provide a circuit board fixture for verifying the start-up performance for the above-mentioned deficiencies in the prior art, and verify the start-up performance of the equipment to be tested through the power supply under different capacitive loads and no capacitive loads. The cost is low and the operation is convenient.

For solving the problems referred to above, the technical scheme that the utility model takes is:

A circuit board fixture for verifying start-up performance, comprising a PCB board, the PCB board is provided with a power supply input terminal, a transistor Q1, a transistor Q2, a power supply output terminal, an adjustable capacitor C1, an adjustable capacitor C2, an adjustable capacitor C3 and An adjustable capacitor C4, the emitter of the triode Q1 is connected to the input terminal of the power supply, the base of the triode Q1 is connected to the external control circuit through the first control line, the collector of the triode Q1 is connected to the output terminal of the power supply, and the adjustable capacitor C1, adjustable capacitor C2, adjustable capacitor C3 and adjustable capacitor C4 are connected in parallel, and one end is connected between the collector of the triode Q1 and the output end of the power supply, and the other end is grounded, and the emitter of the triode Q2 is connected to the input end of the power supply. The base of the transistor Q2 is connected to the external control circuit through the second control line, and the collector of the transistor Q2 is connected to the output terminal of the power supply.

A further technical solution is that the power input end and the power output end are DC JACK female sockets.

The beneficial effect produced by adopting the above-mentioned technical scheme is that the circuit board fixture of the utility model verifies the start-up performance of the equipment to be tested through the power supply under different capacitive loads and no capacitive loads, which is easy to implement and low in cost. Easy to operate.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. PCB board; 2. Power input terminal; 3. Power output terminal; 4. AC 220V to DC 54V power supply; 5. Equipment to be tested.

Detailed ways

The embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

As shown in Figure 1, a circuit board fixture for verifying startup performance is disclosed, which is used to verify whether the device under test 5 can start and work normally when the power supply has no capacitive load and has a capacitive load, including The PCB board 1 is provided with a power input terminal 2, a transistor Q1, a transistor Q2, a power output terminal 3, an adjustable capacitor C1, an adjustable capacitor C2, an adjustable capacitor C3, and an adjustable capacitor C4 on the PCB board 1. The emitter of the triode Q1 is connected to the power supply input terminal 2, the base of the triode Q1 is connected to the external control circuit through the first control line, the collector of the triode Q1 is connected to the power supply output terminal 3, the adjustable capacitor C1, the adjustable capacitor After C2, the adjustable capacitor C3 and the adjustable capacitor C4 are connected in parallel, one end is connected between the collector of the triode Q1 and the output terminal 3 of the power supply, and the other end is grounded. The emitter of the triode Q2 is connected to the input terminal 2 of the power supply. The base is connected to the external control circuit through the second control line, and the collector of the triode Q2 is connected to the output terminal 3 of the power supply.

Wherein, the power input end 2 and the power output end 3 are DC JACK female sockets.

Working principle: 1. The power input terminal 2 is connected to the AC 220V to DC 54V power supply 4 through a cable, and the AC 220V to DC 54V power supply 4 is used to provide a stable power supply voltage of 54V. 2. The circuit board fixture first inputs the 54V voltage from AC220V to DC 54V power supply 4 through the power input terminal 2, and then supplies power through the transistors Q1 and Q2 respectively. When the control signal controlA transmitted by the first control line is at high level, the second When the control signal controlB transmitted by the control line is at low level, the transistor Q1 is turned on. At this time, the 54V voltage will pass through the four adjustable capacitors C1, C2, C3, and C4, and then output to the device under test through the power output terminal 3 The power input terminal of 5 is used for start-up verification, that is, power-on function verification. The adjustable capacitors C1, C2, C3, and C4 are used as capacitive loads, and the power supply can be verified by adjusting the capacitance of the adjustable capacitors C1, C2, C3, and C4. Whether the device 5 to be tested can be started and can work normally under different capacitive load states. When the control signal controlA transmitted by the first control line is at a low level and the control signal controlB transmitted by the second control line is at a high level, Q2 is turned on. At this time, it will be verified that the 54V power supply is under the condition of no capacitive load. Startup capability, that is, power-on function verification. 3. The device under test 5 is a 54V power receiving device, and when it is used as a load, the verification of the start-up function under the state of no capacitive load and the state of capacitive load is carried out.

When using the circuit board fixture, first input the 54V voltage from AC 220V to DC 54V power supply 4 through the power input terminal 2, and then supply power through the transistors Q1 and Q2 respectively. When the control signal controlA transmitted by the first control line is high power When the control signal controlB transmitted by the second control line is low level, Q1 is turned on. At this time, the 54V power supply will pass through the four adjustable capacitors C1, C2, C3, and C4, and then output to the power supply output terminal 3 to be tested. The power input terminal of device 5 is used for start-up verification, and the adjustable capacitors C1, C2, C3, and C4 are used as capacitive loads, and the capacitance values of the adjustable capacitors C1, C2, C3, and C4 can be adjusted to verify the different capacitive loads. Whether it can be started under the state, if the device under test cannot be started, it means that the device under test cannot be started under the capacitive load condition, indicating that it is not suitable for the power supply with the capacitive load, and record it. When the control signal controlA transmitted by the first control line is at a low level and the control signal controlB transmitted by the second control line is at a high level, Q2 is turned on. At this time, it will be verified that the 54V power supply of the device 5 to be tested is under the condition of no capacitive load. Starting ability, it can start normally at this time, that is to say, it can start normally under the condition of no capacitive load, and the starting function is normal. This solution is simple to implement and saves cost. The cost of the fixture plate is only tens of dollars, and it is also convenient to operate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention .

Claims (2)

1. A circuit board fixture for verifying start-up performance, comprising a PCB board (1), characterized in that: the PCB board (1) is provided with a power supply input terminal (2), a triode Q1, a triode Q2, and a power supply output terminal ( 3), adjustable capacitor C1, adjustable capacitor C2, adjustable capacitor C3 and adjustable capacitor C4, the emitter of the triode Q1 is connected to the power input terminal (2), and the base of the triode Q1 is connected to the first control line through the first control line The external control circuit is connected, the collector of the triode Q1 is connected to the output terminal (3) of the power supply, the adjustable capacitor C1, the adjustable capacitor C2, the adjustable capacitor C3 and the adjustable capacitor C4 are connected in parallel and one end is connected to the collector of the triode Q1 Between the power supply output terminal (3), the other end is grounded, the emitter of the triode Q2 is connected to the power supply input terminal (2), the base of the triode Q2 is connected to the external control circuit through the second control line, and the collector of the triode Q2 The electrodes are connected to the output terminal (3) of the power supply. 2. A circuit board fixture for verifying start-up performance according to claim 1, characterized in that: the power input end (2) and the power output end (3) are DC JACK female sockets.

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