shorted pin 1 and 8 555 timer IC

Discussion in 'The Projects Forum' started by biiiboooy, Feb 28, 2012.

  1. biiiboooy

    Thread Starter New Member

    Feb 28, 2012
    2
    1
    what can be the reason why pin 1 and 8 of my 555 timer ICs keep shorting when i put it in my circuit and connect the supply.
     
  2. nerdegutta

    Moderator

    Dec 15, 2009
    2,515
    785
    I suggest you post a picture of your circuit. Most likely, there is something wrong with that.
     
  3. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    Those are the power supply pins. There are ways of shorting the power supply elsewhere on the 555, such as pin 7.

    You could simply have a short somewhere, I agree a picture would help.
     
  4. eric ndungu mwangi

    New Member

    Feb 28, 2012
    1
    0
    please post your circuit diagram you are using in your connections and also your circuit,it will really help to see the connection of other components in the circuit board.
     
  5. jimkeith

    Active Member

    Oct 26, 2011
    539
    99
    My guess is that you may have the power supply connected reverse--this will do it every time...
     
  6. Wendy

    Moderator

    Mar 24, 2008
    20,765
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    I've done that. The 555 never survives.
     
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