18 如圖所示為一共閘(CG)放大器(偏壓電路未繪示),電晶體之 ro → ∞,gm = 1 mA/V。若 RS = 0.5 kΩ,
RD = 3 kΩ,則此放大器之電壓增益 VO/VI為何?
(A) 2 V/V
(B) 3 V/V
(C) 6 V/V
(D)∞
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統計: A(75), B(24), C(17), D(4), E(0) #979236
統計: A(75), B(24), C(17), D(4), E(0) #979236