Debounce time

Discussion in 'General Electronics Chat' started by rssuresh, Sep 18, 2012.

  1. rssuresh

    Thread Starter New Member

    Sep 13, 2012
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    What is meaning by DEBOUNCE time. Why we have consider the optocoupler Fall time and Rise time during debounce time calculation.
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    PackratKing likes this.
  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
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    An average bounce time from imperfect memory is around 15 ms, so I use 20 ms to be on safe side. If a 1 ms 555 one shot is triggered with a switch, the output may consist of several 1 ms pulses; but if timing is increased to 20 ms the OS will not re trigger & only a single pulse will be outyputted. One form of debouncing.
     
    Last edited: Sep 19, 2012
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