isolation amplifier using optocoupler and op amp

Discussion in 'General Electronics Chat' started by vinodquilon, May 20, 2010.

  1. vinodquilon

    Thread Starter Member

    Dec 24, 2009
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    Can anybody give circuit of isolation amplifier using optocoupler and op amp ​
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,177
    1,711
    Well, optocouplers generally aren't very linear - they're either ON, or struggling to turn off. This isn't exactly the case, but once you've fiddled around with optocouplers/optoisolators for awhile you will find that the turn-off time can seem to be an eternity.

    If it's an option, convert the analog data to digital, and then send it through an optocoupler/optoisolator. You'll eliminate many problems by doing that.
     
  3. nsaspook

    Senior Member

    Aug 27, 2009
    2,405
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