40 如圖所示為韋恩電橋振盪器(Wien-Bridge oscillator),已知 R = 10 kΩ 和 C = 16 nF,試求振盪頻率 fo 約為多少?
(A)1 kHz
(B)2 kHz
(C)6.25 kHz
(D)12.5 kHz
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統計: A(134), B(12), C(37), D(19), E(0) #1510468
統計: A(134), B(12), C(37), D(19), E(0) #1510468