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Current testing circuit

A current testing and circuit technology, applied in the direction of measuring current/voltage, measuring device, measuring electrical variables, etc., can solve the problems of low measurement efficiency, low measurement accuracy, inconvenient operation, etc., and achieve simple and reliable circuit design and wide current range. , the effect of wide accurate test

Inactive Publication Date: 2013-01-02
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an accurate test that can realize a wide current range, and the circuit design is simple and reliable, aiming at the defects of low measurement accuracy, inconvenient operation and low measurement efficiency of the maximum output current value of the detection charger in the prior art. , By adjusting the resistance of the potentiometer, the current value to be tested can be continuously adjusted within a wide range of current test circuits

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Embodiment Construction

[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0016] exist figure 1 In the schematic structural diagram of the first preferred embodiment of the current test circuit of the present invention shown, the current test circuit includes an amplification module 1, a regulation module 2 and a test module 3, and the amplification module 1 is used to amplify the current to realize the use of a small current. Control the large charging current of the charger 4 ; the adjustment module 2 is used to adjust the large charging current by adjusting the small current; the test module 3 is used to test the maximum charging current of the charger 4 . T...

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Abstract

The invention relates to a current testing circuit comprising an amplification module for amplifying current, a regulating module for regulating charging current, and a testing module for testing maximum charging current of a charger. The current testing circuit disclosed by the invention has the advantages that an accurate test can be realized within a wide current range; the circuit design is simple and reliable; a tested current value can be continuously regulated within a wide range through regulating the resistance of a potentiometer; and defects that the measurement accuracy is low, the operation is inconvenient and the measurement efficiency is low when a maximum output current value of the charger is detected by adopting the prior art are avoided.

Description

technical field [0001] The invention relates to the field of circuit control, and more particularly, to a current test circuit which can accurately and efficiently test the maximum output current of a charger. Background technique [0002] In order to solve the maximum output current value of the test charger, the usual practice is to use an adjustable cement resistance as the charger load, and change the output current of the charger by adjusting the cement resistance value, so as to measure the output current of the charger. Cement resistors are bulky, and it is inconvenient to continuously adjust the resistance value, so the test method has low precision, inconvenient operation and low test efficiency. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is that, aiming at the defects of low measurement accuracy, inconvenient operation and low measurement efficiency of the maximum output current value of the detection charger in ...

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Application Information

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IPC IPC(8): G01R19/30
Inventor 周明杰管伟芳
Owner OCEANS KING LIGHTING SCI&TECH CO LTD