102年普考電子學 第二題 - 普考
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By Dorothy
at 2013-07-07T16:05
at 2013-07-07T16:05
Table of Contents
題目來源: 102年普考電子學 第二題
http://ppt.cc/vz4Q
這題老師給的答案Rin=r拍+(1+貝塔)*(ro並RL)
Ro = (Rsig+r拍)/1+貝塔 並 ro
我寫的跟老師一樣
但第4小題的Ai跟老師的不同
老師是給
Ai=(1+貝塔)*(ro / ro+RL)*(Rsig / Rsig+Rin)
我的解法如下:
http://ppt.cc/gcWl
我的想法是BJT跟他右邊的等效電路流過RL的電流io應相同
想問一下我這樣的解題想法問題出在哪裡
謝謝~
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普考
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