time delay circuit

Discussion in 'Electronics Resources' started by m.sabeeh, Aug 12, 2011.

  1. m.sabeeh

    Thread Starter New Member

    Jun 26, 2010
    10
    0
    hello , i need to build a circuit which can produce time delay of about 6-7 hours. after that it should give a signal to relay to change its contact. please advice some very simple circuit based on 555 or something else.

    thankx for help :)
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
    2,936
    488
    How will the circuit be triggered? Manually? With an input pulse or can it start when powering up the circuit?
     
    Last edited: Aug 13, 2011
  3. m.sabeeh

    Thread Starter New Member

    Jun 26, 2010
    10
    0
    yeah, manually triggered,
     
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