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Power supply testing device

A power supply test and power supply technology, applied in the field of electronic loads, can solve the problems of unstable current, complex circuit structure, user inconvenience, etc., and achieve the effect of stable performance and sufficient heat dissipation conditions

Inactive Publication Date: 2010-01-27
邱野
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing power supply test devices all use high-power triodes or field effect tubes to realize current regulation. The current regulation realized in this way is not only complicated in circuit structure, but also easily affected by temperature, resulting in unstable current. If a closed-loop system is added, the circuit Will be more complicated, prone to failure, and difficult to repair after damage
In addition, the power of the high-power triode or field effect tube is consumed on the power tube, which is easy to cause the power tube to overheat and be damaged, which brings inconvenience to the user.

Method used

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Embodiment Construction

[0009] like figure 1 As shown, the present invention includes three parts: a power supply under test, an adjustable voltage stabilizing module, and a power distribution module. The output terminal LOAD1 of the power distribution module is connected to the output terminal OUT of the adjustable voltage stabilizing module, and the other output terminal LOAD2 of the power distribution module It is connected with the other output terminal GNDb of the adjustable voltage stabilizing module to provide a fixed resistance resistance; the input terminal IN of the adjustable voltage stabilizing module is connected to the positive pole of the power supply under test, and the other input terminal GNDa is connected to the positive pole of the power supply under test. Negative connection, used to adjust the load current by adjusting the output voltage of the voltage regulator module.

[0010] like figure 2 As shown, the power distribution module is composed of power resistors R1, R2 and a b...

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Abstract

The invention provides a power supply testing device, relates to the structure improvement of the power supply testing device and belongs to an electronic load of a low-voltage switch power supply or a linear power supply. The power supply testing device is mainly used for testing the voltage stabilization effect of a voltage-stabilizing tube, achieving current regulation and the like. The invention is to provide the power supply testing device with simple structure and high accuracy of constant current. The power supply testing device is characterized by comprising three parts: a tested power supply, an adjustable voltage-stabilizing module and a power distribution module; the output end of the power distribution module is connected with the output end of the voltage-stabilizing module to provide a resistance with a fixed resistance value; and the input end of the adjustable voltage-stabilizing module is connected with the tested power supply to regulate the load current by regulating the output voltage of the voltage-stabilizing module.

Description

Technical field: [0001] The invention relates to the improvement of the structure of a power supply testing device, which belongs to the electronic load of a low-voltage switching power supply and a linear power supply, and is mainly used for testing the voltage stabilizing effect of a voltage stabilizing tube, realizing current regulation, and the like. Background technique: [0002] At present, the existing power supply test devices all use high-power triodes or field effect tubes to realize current regulation. The current regulation realized in this way is not only complicated in circuit structure, but also easily affected by temperature, resulting in unstable current. If a closed-loop system is added, the circuit It will be more complicated, prone to failure, and difficult to repair after damage. In addition, the power of the high-power triode or field effect tube is consumed on the power tube, which may easily cause the power tube to be overheated and damaged, which bri...

Claims

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Application Information

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IPC IPC(8): G01R31/40
Inventor 邱野
Owner 邱野
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