【简答题】A.Einstein had no other interests besides science. B.Germans usually have a high respect for science. C.Einstein was forced to serve in the German army. D.Einstein's reputation was ruined because of h...
【简答题】电路如图题4.7.8所示(射极偏置电路),设信号源内阻R s =5kΩ,电路参数为:R b1 =33kΩ,R b2 =22kΩ,R e =3.9kΩ,R c =4.7kΩ,R L =5.1kΩ,在R e 两端并接一电容C e =50μF,V CC =5V,I EQ =0.33mA,β 0 =120,r ce =300kΩ,r bb' =50Ω,f T =700MHz及C b'e =1pF。求:(1...