Connect with us

Simple Circuit Suggestions, Please

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

Scroll to continue with content
  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.

    --- sam | Sci.Electronics.Repair FAQ Home Page:
    Repair | Main Table of Contents:
    +Lasers | Sam's Laser FAQ:
    | Mirror Site Info:

    Important: Anything sent to the email address in the message header is ignored.
    To contact me, please use the feedback form on the S.E.R FAQ Web sites.
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day