Help to design Comparator with hysteresys

Discussion in 'General Electronics Chat' started by dileepchacko, Aug 27, 2009.

  1. dileepchacko

    Thread Starter Active Member

    May 13, 2008
    102
    1
    Please help me to design a comparator with hysteresis using Op-Amps.
     
  2. pradeeba

    Active Member

    Feb 27, 2008
    104
    0
    Hi dileep,
    use LM311 or LM339 (suggested by sudeendra)
     
  3. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    This chapter

    http://www.allaboutcircuits.com/vol_3/chpt_8/12.html

    covers that. What you are talking about is a Schmitt Trigger, it can use either op amps or comparitors. Op amps do not go rail to rail, which is to say they can not reach either power supply voltage, which has to be accounted for in any calculations, but they do work.
     
  4. dileepchacko

    Thread Starter Active Member

    May 13, 2008
    102
    1
    Thanks Pradeeba and sudeendra
     
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