直流9V经过桥式整流后得到的电压会下降吗?降多少?

有人说桥式整流后的电压是原电压的0.95倍左右??
2025-03-14 21:56:23
推荐回答(2个)
回答1:

电源通过桥式整流器需同时通过两个PN结,即两个整流二极管,硅整流管每个结压降为0.7V,所以输出的电源电压会降低1.4V,即输出为7.6V。

回答2:

相当于二极管的的正向压降
一般二极管大约0.65~0.7左右
图中电流通过2个二极管(0.65~0.7)x2

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