交流电压表保护电路故障的检修

Repair of Failure in AC Voltmeter Protection Circuit

介绍了交流电压表的保护电路,给出了正常状况下各主要测试点的电压值,对其常见故障进行了归纳和总结,并给出了排除故障的具体方法和仪表校正时的步骤要点。

This paper introduces protection circuit of AC voltmeter and gives voltage values of each measured point in normal condition. Additionally, it presents concrete method of troubleshooting and key points for instrument calibration.