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发表于 2006-5-8 15:30:00
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请问C1,C2起什么作用呀?
Something confused, in picture 1, why do you connnect the collector of Q with emitter, if in that case, there is no voltage gain, and Miller compensation is meaningless, the transfer function is sCbe+sC1+gm, some kind of equivalent impedance, don't know what it is used for? 
In picture 2, it seems like a Sansen low pass filter, not sure. |   
 
 
 
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