45. 如右圖所示之並聯-串聯式(Shunt-Series)負回授放大電路,電晶體參數 gm1 = gm2 = 6 mA/V,若忽略爾利效應(Early Effect)及基體效應 (Body Effect),電阻 RS = RD = 10 KΩ 及 RF = 80 KΩ,請問電流放大倍數 Af = Io / Is為何?
(A) -5.9
(B) -8.9
(C) -12.9
(D) -15.9
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統計: A(12), B(37), C(23), D(4), E(0) #3160074
統計: A(12), B(37), C(23), D(4), E(0) #3160074