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Short circuit detection circuit

A short-circuit detection and circuit technology, applied in the direction of short-circuit test, measurement of electricity, measurement of electrical variables, etc., can solve the problems of FET and capacitor breakdown, short-circuit, waste of time, etc.

Inactive Publication Date: 2013-02-13
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually, the switching circuit for the computer to supply power to the central processing unit includes several FETs and capacitive components. During the failure analysis process, it is often found that the FETs and capacitors are broken down or short-circuited due to welding, foreign objects, etc. In the test, it is impossible to use a multimeter to accurately determine the specific short-circuited component, and it takes a lot of time to analyze to determine the specific short-circuited component

Method used

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  • Short circuit detection circuit

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Embodiment Construction

[0014] Please refer to figure 1 , the preferred embodiment of the short circuit detection circuit 100 of the present invention includes a comparison circuit 20 , an indication circuit 10 , a switch circuit 30 , and a pair of metal probe pins 40 . The metal probe 40 is connected to the indicating circuit 10 through the comparison circuit 20 and the switch circuit 30 in sequence.

[0015] The pair of metal probing pins 40 includes a first probing pin P1 and a second probing pin P2, wherein the first probing pin P1 is connected to the comparator circuit 20, the second probing pin P2 is grounded, and the first probing pin P1 and the second probing pin P2 are used for At both ends of the component to be tested, if the component to be tested is short-circuited, the first probe pin P1 is connected to the second probe pin P2 to ground, and a low-level short-circuit signal is output to the comparison circuit 20; if the device is not short-circuited, Then, the circuit between the first...

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Abstract

The invention discloses a short circuit detection circuit, which comprises a pair of metal probe pins, a comparison circuit, a switch circuit, and an indicating circuit, wherein the pair of metal probe pins is used for detecting a tested element; the metal probe pins output a short circuit signal when the tested element is in a short circuit; the comparison circuit outputs a comparison signal after comparing the short circuit signal with standard voltage; the switch circuit is used for outputting corresponding switch signal according to the comparison circuit, and the indicating circuit is used for indicating whether the tested element has a short circuit fault according to the switch signal. The short circuit detection circuit can rapidly determine the tested element in the short circuit.

Description

technical field [0001] The invention relates to a short circuit detection circuit. Background technique [0002] Usually, the switching circuit that the computer supplies power to the central processing unit includes several FETs and capacitive elements. During the failure analysis process, it is often found that the FETs and capacitors are broken down or short-circuited due to welding, foreign objects, etc. In some cases, during the test, it is impossible to use the multimeter to accurately determine the specific short-circuited component, and it takes a lot of time to analyze to determine the specific short-circuited component. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide a short-circuit detection circuit that can quickly determine the short-circuited element. [0004] A short circuit detection circuit, comprising: [0005] A pair of metal probe pins are used to detect the component under test. When the component under test is shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
CPCG01R31/20G01R31/02G01R31/40G01R31/025G01R31/028G01R31/52G01R31/64
Inventor 涂一新熊金良周海清
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD