49. 右圖為理想放大器所構建之韋恩電橋(Wien-bridge)振 盪器,若R1 = 4 kΩ,R2 =1 kΩ,R4 = 10 kΩ,C1 = 0.1 μF ,C2 = 0.4 μF,該電路之電壓增益AV應為多少?
(A) 10
(B) 9
(C) 8
(D) 7
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統計: A(10), B(141), C(32), D(9), E(0) #1639617
統計: A(10), B(141), C(32), D(9), E(0) #1639617