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万用表怎么测量电器的功率

更新时间: 2020-11-09 00:00:00     

1、根据公式P=(U^2)/R=(I^2)R用电阻法测功率仅仅是用于纯电阻电路,在电路里用到了电感(电机日光灯等)电容等测试就不准了。

2、还有设备中包含有用到电子电路的设备都是测不准的。要测试功率只有测试电流。要用工业动铁式电流表测量全有效值电流,这样才可以。

关键词: 怎么 测量 电器 功率

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