Delayed Buzzer Circuit

Discussion in 'The Projects Forum' started by Fugbet, Jul 11, 2012.

  1. Fugbet

    Thread Starter New Member

    Jul 10, 2012
    1
    0
    Hey all,

    I'm trying to create an RC circuit such that when the switch for the power source is closed, there is a ~30 second delay followed by a buzzer and LED that go off continuously until the switch for the power source is opened.

    I've tried multiple circuits ( here is one, look at the delayed timer)

    I have yet to have any luck making these. Any/all help would be greatly appreciated.

    C
     
  2. mcasale

    Member

    Jul 18, 2011
    210
    12
    You didn't post the circuit.
     
  3. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,770
    970
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