35.圖(二十一)所示共射極放大器,若 =490Ω,= 47 Ω,RL = 1 ..-阿摩線上測驗
35.圖(二十一)所示共射極放大器,若 =490Ω, = 47 Ω,RL = 1 k Ω,假設 CB = CC = CE = ∞, = 0.7 V,β = 100,下列數值何者最
接近實際情況?
(A) re = 37 Ω,rπ = 3.7 k Ω,Av = 22 ( V / V )
(B) re = 3.7 k Ω,rπ = 37 Ω,Av = − 22 ( V / V )
(C) re = 3.7 k Ω,rπ = 37 Ω,Av = 22 ( V / V )
(D) re = 37 Ω,rπ =3.7 k Ω,Av = − 22 ( V / V )