Turn off relay after 5 sec.

Discussion in 'General Electronics Chat' started by Benqos, Jul 18, 2013.

  1. Benqos

    Thread Starter New Member

    Jul 18, 2013
    2
    0
    Hi, I need help. I need a circuit that will, when plugged on 12V DC, turn on relay for 5 seconds and then turn it off. Once I managed to find something like that but now I can not, so I asked for help if someone has a circuit diagram. thanks
     
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,957
    1,097
    Try this circuit.
     
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  3. elec_mech

    Senior Member

    Nov 12, 2008
    1,513
    193
    Just to add another option, you can use a 555 in monostable mode and add a power-on trigger to the input. Look here.
     
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  4. Benqos

    Thread Starter New Member

    Jul 18, 2013
    2
    0
    I like the idea of ​​the 555 timer. I had it on my mind but I had no idea how to do power-on trigger. Now I know. Thanks for your help. :D
     
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