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Difference between an optocoupler and a SSR

Discussion in 'Misc Electronics' started by mbattistello, Apr 28, 2009.

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  1. mbattistello

    mbattistello Guest

    Does anybody know the difference between an optocoupler and a Solid
    State Relay?

    Thank you very much!

    Kind Regards,
  2. KMoffett


    Jan 21, 2009
    Opto-couplers are "generally" designed to transfer and isolate lower power signals.
    SSR's are "generally" designed to allow lower power signals to be isolated from, and switch high power devices.

  3. Sjouke Burry

    Sjouke Burry Guest

    The last one is a special version of the first one.
  4. Jamie

    Jamie Guest

    Why should there be a difference? most that I know of integrate a
    opto-coupler for isolated control of the solid state switch.

    In other words, consider a SSR having a optocoupler in it."
  5. Eeyore

    Eeyore Guest

    An SSR typically carries heavy loads and likely incorporates an
    optocoupler and possibly also zero-voltage / current switching

    An optocoupler is a low power device designed simply to galvanically
    isolate a control input and output.

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