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Gain, Feedback and Amplifier

Discussion in 'Electronic Basics' started by padmow, Aug 25, 2005.

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  1. padmow

    padmow Guest

    Hi,

    I have this amplifier, a small signal transistor driving class AB
    stage.

    from the output of class AB stage, its connected back to base of the
    small signal transistor .

    how do I calculate gain of this amplifier.

    best wishes
    Padmow
     
  2. Andrew Holme

    Andrew Holme Guest

    Gain (G) depends on the amount of negative feedback (B).

    G ~ 1/B
     
  3. If the first base also has an input resistor, then the gain is
    probably -(feedback resistance)/(input resistance), approximately.
     
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