为什么输入220v的交流电，对其整流滤波后得到的不是310v左右的直流电，反而是380v左右的直流电？ 知乎 Sketch Coloring Page

为什么输入220v的交流电，对其整流滤波后得到的不是310v左右的直流电，反而是380v左右的直流电？ 知乎 Template

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