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電子電路故障探測器的研制 _

The Research and Manufacturing of Trouble─Shooting Tester for Electronic Circuit

作者: 裘毅民; 
單位:北京醫(yī)科大學第一醫(yī)院;
關(guān)鍵詞: 故障測試;  示波器;  輔助電路;  印刷電路板;  電流─電壓圖形; 
分類號:
出版年·卷·期(頁碼):1995·1·4(243-244)
摘要:

本裝置是由一臺示波器加一個輔助電路組合而成。主要為印刷電路板脫離主機、切斷電源的情況下,探查電路板上的故障元件而設(shè)計。用它測出電路板上各元件的電流─電壓圖形,然后進行分析比較辨別圖形特征差別,查出故障元件。這為電子儀器維修工程師提供一種檢修印刷電路板級故障的測試手段和工具。

This device consists of a common oscilloscope and an auxiliary circuit.It was mainly designed for finding out failed parts on PCB(printed circuit board)when PCB is off from host machine and powered─off.The current/voltage curves of PCB were measured with this device and displayed on the screen,then the features of the curves were analyzed and compared.Characteristics were distinguished,which led to fining out the failed parts.It is a trouble shooting device for engineers to maintain electronic PCB’s.

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