555 time delay help

Discussion in 'General Electronics Chat' started by born2win, Feb 17, 2009.

  1. born2win

    Thread Starter New Member

    Feb 17, 2009
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    I need to Delay a 12vdc relay by 5s to 20s max for my mobile tv parking brake switch. Does anyone know how to wire the 555 ic chip or have a schematic for it?
     
  2. mik3

    Senior Member

    Feb 4, 2008
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    63
  3. born2win

    Thread Starter New Member

    Feb 17, 2009
    4
    0
    Will that circuit remain on til i shut off the car or kick off in a certain time? I need to delay it a few secs in able for the radio to boot n than sense the ground connection. Can i use a capacitor n a resistor inline.
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    This circuit will turn on for a preset amount of time when the trigger button is pressed.
     
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