作者fairwarning (一輪明月與藍夜!!)
看板Grad-ProbAsk
標題[理工] [電子]-請問這條迴路?
時間Thu Feb 4 13:21:44 2010
[電路圖]
http://www.wretch.cc/album/show.php?i=fairwarning&b=82&f=1772864268&p=2
[題目]
Consider the source-follower circuit
The most negative output signal voltage occurs when the transistor just
cuts off.
Find the Vo(min)
[解答]
IDQ*Rs + Vo Vo
iD = ----------------- + ------ >= 0
Rs RL
請問這條基本的迴路怎麼來的..? = =
謝謝大家的幫忙喔..
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1F:推 shinyhaung:IDQ*Rs是直流時Vs的電壓 再加上小訊號時Vo的電壓 02/04 13:26
2F:→ shinyhaung:Vo太小的話會抵消掉Vs 因此找電流大於等於零的時候 02/04 13:27
3F:→ fairwarning:謝謝喔 ^^ 02/04 13:49