timed relayed for cctv

Discussion in 'The Projects Forum' started by akz12, Apr 11, 2009.

  1. akz12

    Thread Starter New Member

    Apr 11, 2009
    1
    0
    hi ,id want to make a circuit that causes 4 switches to switch on and off after a certain period of time and i want it to be continious.

    any help ?
    thanks
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You can use timer ICs (like 555 or 4047) or smart relays or a PLC.

    I think smart relays and PLC is a better solution than using timer ICs because you don't need to make a PCB. Also, the whole design will be more neat and smaller.
     
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