negative feedback

Discussion in 'General Electronics Chat' started by anira, Oct 2, 2005.

  1. anira

    Thread Starter New Member

    Oct 2, 2005
    1
    0


    hi..
    i want to ask this question..
    the benefit of negative feedback normally are accompanied by 2 disadvantages,decrease in gain and tendency for oscillation.What is the simplest and most common method used to overcome the problem?how to compensate a unity-gain feedback configuration?
     
  2. sanjeev203

    New Member

    Sep 19, 2005
    7
    0


    Use of series resistance at the output and use of compensating capacitor parallel to the feedback stablizes the output.
     
  3. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi,

    pls. clarify your question on "how to compensate a unity-gain feedback config."
     
  4. jidhishs

    New Member

    Oct 21, 2005
    3
    0


    you can use a capacitor parallel with a resistor as the negative feedback.it will reduce the oscillations..stabilizes the circuit..but the bandwidth will be less...

    else use a PID controller...means an integrator , a differntiator, and the proportional controller nothing but your unity gain amplifier connected parallely....thi salso will reduce oscillations...
     
  5. jidhishs

    New Member

    Oct 21, 2005
    3
    0
     
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