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Low-voltage capacitor testing system and method

A capacitance test, low voltage technology, applied in the field of testing, can solve problems such as inaccurate capacitance value testing

Active Publication Date: 2021-09-14
SUZHOU INTELLIGENT AUTOMATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies in the prior art, one of the purposes of the present invention is to provide a low-voltage capacitance testing system and method, which can solve the problem of inaccurate capacitance value testing

Method used

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  • Low-voltage capacitor testing system and method

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Embodiment Construction

[0030] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0031] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or there may be an intervening component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0032] Un...

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Abstract

The invention discloses a low-voltage capacitor testing method, which comprises the following steps that a circuit conduction critical value is set by a control end member, detecting whether the circuit conduction critical value meets requirements, if so, the next step is executed, and if not, resetting is conducted; a micro constant-current charging unit charges a capacitor to be tested; a voltage detection unit measures the voltage value of the capacitor to be detected and generates capacitor voltage data, and a frequency detection unit measures the voltage value of the capacitor to be detected and generates frequency data; a voltage amplification unit amplifies the capacitor voltage data and generates voltage amplification data; and a control unit carries out data calculation on the capacitor to be tested according to the voltage amplification data and the frequency data. The constant-current discharging unit and the miniature constant-current charging unit are matched for capacitance detection, capacitance detection can be carried out under the condition that an IC internal circuit is not conducted, meanwhile, capacitance charging is not affected, the measurement accuracy is improved, and the problem that capacitance value testing is not accurate is solved. The invention further discloses a low-voltage capacitor testing system.

Description

technical field [0001] The invention relates to the field of testing, in particular to a low-voltage capacitance testing system and method. Background technique [0002] At present, the PCBA motherboard refers to the most basic and important printed circuit board of a microcomputer, on which are installed the main circuit systems that make up the computer, generally including BIOS chips, I / O control chips, buttons, panel control switch interfaces, and indicator lights. Components, expansion slots, motherboards and DC power supply plug-ins for cards and other components. [0003] As technology is updated day by day, the integration of electronic products is getting higher and higher, and the functionality is becoming more and more powerful. Almost most of the products have capacitors, which need to be tested to verify the functions. Among them, the capacitance test has become the priority test requirement of some companies, so that the timely detection and verification of th...

Claims

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Application Information

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IPC IPC(8): G01R31/28G01R27/26
CPCG01R31/281G01R27/2605
Inventor 李祥周建宇黄少海党代表
Owner SUZHOU INTELLIGENT AUTOMATION EQUIP CO LTD
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