单项选择题
图示电路中,变阻器R=200Ω,滑动端C处中点,为使UCB=0.5UAB,则RL应取()
A.50ΩB.∞ΩC.0ΩD.100Ω
A.-50VB.-10VC.10VD.50V
A.2AB.-2AC.2/3AD.-2/3A
A.AB.BC.CD.D
A.T1为PNP,T2为PNPB.T1为NPN,T2为NPNC.T1为PNP,T2为NPND.T1为NPN,T2为PNP
A.5VB.4VC.3VD.2V
A.多余项插入法B.改变电路结构C.加接惯性环节D.消除选通脉冲
A.N沟道耗尽型场效应管B.P沟道耗尽型场效应管C.N沟道增强型MOS管D.P沟道增强型MOS管
A.V=IR+EB.V=IR-EC.V=-IR-ED.-V=IR+E
A.电流并联负反馈B.电压并联负反馈C.电流串联负反馈D.电压串联负反馈