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正确的电源电压值怎么算
更新时间: 2021-06-17 04:00:54  

1、未加滤波电容时,输出的直流电压平均值为交流输入电压有效值的0.9倍。加电容滤波后,输出的空载直流电压平均值为交流输入电压有效值的√2倍(1.414);加载直流电压平均值为交流输入电压有效值的1.2倍。

2、电源220V,无滤波:全波整流电压=220×0.9=198V。半波整流电压=220×0.45=99V。

关键词: 正确 电源 电压 怎么

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