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29 雙極性接面電晶體(BJT)之 β=100,熱電壓 VT = 25 mV。若此電晶體工作於集極電流 IC = 0.5 mA,則其小訊號模型參數 rπ 為何? (A) 1 kΩ (B) 2 kΩ (
問題詳情
29 雙極性接面電晶體(BJT)之 β=100,熱電壓 VT = 25 mV。若此電晶體工作於集極電流 IC = 0.5 mA,則其小訊號模型參數 rπ 為何?
(A) 1 kΩ
(B) 2 kΩ
(C) 5 kΩ
(D) 10 kΩ
參考答案
答案:C
難度:
計算中
-1
書單:
沒有書單,新增
上一篇 :
28 考慮一金氧半場效電晶體 VA=10 V,當操作在過驅電壓 Vov=0.1 V 時,其本質增益(gmro)的值為何? (A) 100 (B) 200 (C) 500 (D) 1000
下一篇 :
30 與其他雙極性接面電晶體的放大器組態比較,有關共射極(CommonEmitter)放大器組態之特性,下列何者正確? (A)高電壓增益 (B)低電流增益 (C)低輸入阻抗 (D)低輸出阻抗
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