彩管漏电流高精度检测的机理及实现

Mechanism and Realization of High Resolution CRT Leakage Current Test

本文讨论了工业现场强干扰及几十千伏高压跳火环境下ｎＡ级彩管漏电流测量机理及测量仪的设计与实现。新研制的微电流测量仪可由原０．１μＡ级测量精度提高到ｎＡ级，仪器长期运行良好。

This article presented the mechanism,design and realization of a nA level CRT leakage current tester,which works in an environment of strong industry noise and extrahigh tension flash-over. It im- proves the measuring accuracy from 0. 1μA to nA. The tester has been put into application for a long time and been keeping a good performance.