【单选题】
当PNP型晶体管工作在放大区时,各极电位关系为uC ___uB。
A. >
B. <
C. =
D. ≤
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答案
B
解析
暂无解析
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34若使三极管具有电流放大能力,必须满足的外部条件是___。
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36在由PNP晶体管组成的基本共射放大电路中,当输入信号为1KHz、5mV的正弦电压时,输出电压波形出现了底部削平的失真。这种失真是___ 。
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51两级放大电路,Au1=-40,Au2=-50,若输入电压U1=5mv,则输出电压Uo为 ___
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【单选题】
56从结构上来看,正弦振荡电路是一个 ___ 。
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【单选题】
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