Circuit for testing digital output

Discussion in 'General Electronics Chat' started by jut, Aug 12, 2010.

  1. jut

    Thread Starter Senior Member

    Aug 25, 2007
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    When the output goes high (+12V) I want a red LED to turn on, but when the output goes low, I want a green LED to turn on. Here's the circuit I came up with: (see attachment)

    The onlyl downside: with the Output in Hi-Z, the circuit is drawing 6mA. Anybody know of something better?
     
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  2. beenthere

    Retired Moderator

    Apr 20, 2004
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