Differential circuit with 2 transistor

Discussion in 'Homework Help' started by tam72f1, Feb 13, 2015.

  1. tam72f1

    Thread Starter New Member

    Aug 19, 2014
    15
    1
    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
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,750
    4,797
    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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