opamp as integrator

Discussion in 'General Electronics Chat' started by Xufyan, Aug 17, 2011.

  1. Xufyan

    Thread Starter Member

    Aug 3, 2010
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    when the opamp is connected as an integrated why we connect capacitor as a feedback ???

    if we apply large frequency the circuit is open but when apply low frequency the circuit act as short circuit (a voltage follower) , how to overcome this :confused:
     
  2. steveb

    Senior Member

    Jul 3, 2008
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    Isn't it the other way around? A capacitor blocks DC and passes high frequency.

    In practice a high value resistor is often placed in parallel with the capacitor to help discharge on very long time scales (low frequency).
     
  3. t06afre

    AAC Fanatic!

    May 11, 2009
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  4. MrChips

    Moderator

    Oct 2, 2009
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  5. Xufyan

    Thread Starter Member

    Aug 3, 2010
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    thanks alot buddies :)
     
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