天气预报 > 数码 > 万用表怎样测试交流和直流电压
万用表怎样测试交流和直流电压
更新时间: 2021-04-23 01:27:31  

1、打开数字万用表电源开关,将万用表挡位旋转至交流电压挡750V量程。

2、打开电路中的电源开关。

3、测1-2点之间的电压,记录读数,电压值测得为:220V。

4、将万用表挡位旋转至交流电压挡20V量程,分别测量3-4,4-5,6-7各点之间的电压,并记录读数。

关键词: 怎样 测试 交流 直流 电压

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