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Differential circuit with 2 transistor

T

Thread Starter

tam72f1

Joined Aug 19, 2014
15
Hi all!
I have some question about differential circuit that use transistor:
1. Input impedance is hight. Why?
2. this circuit can remove noise. Why?
I attach a picture of it for you!
Thank all
 

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WBahn

WBahn

Joined Mar 31, 2012
30,076
Sounds like homework. What are YOUR thoughts on those questions?

You might also use a circuit that actually has an output.
 
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