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万用表如何检测家庭电路

更新时间: 2020-09-18 00:00:00     

方法步骤:

1、准备好万用表,万用表要支持交流电压220V范围的测量;

2、将黑色触笔线插入万用表的COM端口,将红色触笔线插入万用表的端口;

3、将开关调到750V交流电压的档位,同时将红色触笔接触电路正极,黑色触笔接触电路负极;

4、此时万用表即可显示出电压值。

关键词: 如何 检测 家庭 电路

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