作者icybeauty (小甜心)
站内Physics
标题[问题] 请问internal coupling的解法
时间Sun Nov 25 08:19:41 2007
※ [本文转录自 Electronics 看板]
作者: icybeauty (小甜心) 站内: Electronics
标题: [问题] 请问internal coupling的解法
时间: Sun Nov 25 08:15:40 2007
请大家帮忙,我那在 Cin//Rin 数值不知道怎麽求
Cin=1/jwC,缺少w不是算不出来吗?
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Rs=100k ohm
Rin=100nF
Cin(in parallell connection with the input resistance)
Open-circuit voltage gain=100(V/V)
Rout=100 ohm
Question:(a)What's the overall voltage gain
(b)If a voltage follower(Rin= infinite，A=1，Rout=0) is sandwiched
between，what is the overall voltage gain
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the overall voltage gain=Vs/Vo=(Vs/Vi)*(Vi/Vo)
但是就卡在电容与电阻串联不知道怎麽解
(b)的答案是不是同(a)?
谢谢大家回答
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