Degenerated CE Stage with Base Resistance
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작성자 양희원 댓글 2건 조회 1,158회 작성일 20-04-22 12:03본문
In today's lecture, we learned that voltage gain A_v(=Vout/Vin) is same as the above the first image.
Then, when we have base resistance R_B, how can "Vout/V_A" be derived as the following lecture note p.51, using Vout/Vin above?
Then, when we have base resistance R_B, how can "Vout/V_A" be derived as the following lecture note p.51, using Vout/Vin above?
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Gyujun Jeong님의 댓글
Gyujun Jeong 작성일I think if you draw the small signal model of the CE stage, V_A is the voltage right to the Base resistor, and the Vout is the voltage left to the Collector resistor. With this notation, if you apply the KCL, you can obtain the Vout over VA like above.
TA님의 댓글
TA 작성일
vout/va simply means small signal gain.
Ignore Rb, draw a small signal model and derive a gain of the degenerated CE stage without base resistance.