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Simple Circuit Suggestions, Please

Discussion in 'Electronic Repair' started by Mark, Jul 27, 2004.

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  1. Mark

    Mark Guest

    I'm in need of a circuit (simpler the better) that will take
    the voltage/current that's normally driving a single LED and
    allow me to drive the coil of a relay (SS or mechanical)
    that has enough balls to handle 12-24V at 2 amps or so. If
    an SCR or Triac is more appropriate, that's fine too.

    Application: I want to be able to turn on a remote
    incandescent indicator lamp (or some other easily
    visible indicator) when the "armed" LED of a security system
    is on.

    Any suggestions appreciated
     
  2. Without knowing the details of the circuit, safest thing to do may be to
    use an optoisolator to drive a bipolar transistor or mosfet which controls
    a suitable relay. It might also be possible to simplify this depending
    on exactly what you have available.

    But, how bright does the remote lamp need to be? There are some very
    high intensity LEDs that run on essentially the same voltage and current
    as normal ones.

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