191问答库 > 交流12V转为12V直流和5V直流的电路如何实现？

交流12V转为12V直流和5V直流的电路如何实现？

2025-03-16 10:33:31
推荐回答（1个）
回答1：

12V的交流电整流后大约有15V，然后使用一片7812产生12V电压，在使用一片7805将12V变成5V。
注意，如果电流较大的时候，7805和7812都要加散热片。

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