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问题详情

差动放大器中,用恒流源代替长尾R e是为了( )

A、提高差模电压增益

B、提高共模输入电压范围

C、提高共模抑制比

时间：2021-07-17 23:24 关键词：发电厂及电力系统高起专电子技术 2019级第三学期期末考试机械制造与自动化

答案解析

C

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