35 如圖所示為一文氏電橋振盪器。R2 = 100 kΩ,R1 = 20 kΩ,R = 10 kΩ,C = 0.1 μF。求振盪器的振盪頻率?
(A) 15.9 Hz
(B) 79.6 Hz
(C) 159 Hz
(D) 1000 Hz
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統計: A(24), B(28), C(178), D(20), E(0) #2142210
統計: A(24), B(28), C(178), D(20), E(0) #2142210
詳解 (共 2 筆)
#4966734
f =1/2 pi RC
=1/2 x 3.14 x 10K x 0.1u
= 1/6.28 x 10-3
=1000/6.28
=159
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