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    Re: Question about Optocoupler H11G1

    doing it the old way ...
    http://schematicrise.blogspot.fr/2014/10/energy-saver-relay-coil-diagram-circuit.html

    Alain
  2. Replies
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    8,362

    Re: Question about Optocoupler H11G1

    No way to get precise current from the output transistor ... with such optos

    BUT ... it exists LINEAR optocouplers

    just have a look to HCNR 200/201 or HCPL 7520 ... i.e.
    or you can try to make...
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