design of square wave generator for particular input signal

Discussion in 'The Projects Forum' started by Afeesh, Sep 11, 2009.

  1. Afeesh

    Thread Starter New Member

    Jun 12, 2009
    9
    0
    sir,
    I want to generate a square wave using 555(in astable or monostable mode) in such a way that when an input(high/low) occurs it should generate sqare wave continuosly and when the input disappears it should stop generating.please suggest any idea.
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Use the 555 in astable mode. Use the reset pin to control whether it outputs a square wave or not. When the reset pin is high it will work however when it is low it will stop.
     
  3. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,535
    Pin 4 is a enable/disable for the timer, so it is the digital input you are looking for.

    Have you seen these?

    The 555 Projects
     
  4. Afeesh

    Thread Starter New Member

    Jun 12, 2009
    9
    0
    thank u i will try and see its working or not
     
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