Schmitt trigger and rectangular wave

Discussion in 'General Electronics Chat' started by CobelAli, Mar 14, 2013.

  1. CobelAli

    Thread Starter New Member

    Mar 14, 2013
    1
    0
    Hi,

    Is it possible to produce a rectangular wave with a duty cycle of 10 percent using a Schmitt trigger and a constant frequency sine wave? I seem to recall the minimum duty cycle possible was 50%, but maybe that limit was for something else.

    Thanks,
    Ali
     
  2. russ_hensel

    Well-Known Member

    Jan 11, 2009
    818
    47
    It is, but even if it were not you could make a 90% duty cycle and invert it. The duty cycle depends on the trigger levels, for a short duty cycle you get into the peaks of the wave and things get ticklish on exact values. It is also sensitive to the amplitude of the wave.
     
  3. Jaguarjoe

    Active Member

    Apr 7, 2010
    770
    90
    Square up the sine wave to get 50% dc then use a retriggerable one shot to adjust for the dc of your choice. You might even get lucky and be able to skip the squarewave part of it.
     
  4. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    To check is this suit your need?

    [​IMG]
     
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