help with LM311N Comparator

Discussion in 'Homework Help' started by hunterage2000, Apr 27, 2012.

  1. hunterage2000

    Thread Starter Active Member

    May 2, 2010
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    0
    for an LM311N Comparator to work as a zero crossing detector, Should a 20k resistor be placed between VS+ and the output?
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,361
    Yes. Definitely. Any thing from 1kΩ to 100kΩ depending on what you are driving.
     
  3. hunterage2000

    Thread Starter Active Member

    May 2, 2010
    400
    0
    nice one mate, it works in multisim 11 but not 8 for some reason!
     
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