【单选题】【消耗次数：1】
单相桥式整流电路输出的脉动电压平均值UO(AV)与输入交流电压的有效值U2之比近似为
①
0.9
②
1
③
1.2
④
1.4
参考答案：
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相关题目
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在单相桥式整流电路中，输出电压的平均值UO与变压器副边电压有效值U2应满足______关系。
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