Misseds pulse circuit??

Discussion in 'The Projects Forum' started by Teena123, Dec 31, 2012.

  1. Teena123

    Thread Starter Member

    Nov 22, 2012
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    Please can someone give me a suggestion of a circuit with op-amp or any other to determine or identify a missed pulse and also an output to display it. Thank you.
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    what does a missed pulse mean?
     
  3. bertus

    Administrator

    Apr 5, 2008
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  4. crutschow

    Expert

    Mar 14, 2008
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    What's your definition of "an output to display it"?
     
  5. Teena123

    Thread Starter Member

    Nov 22, 2012
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    output as in maybe an led to go on when there is a missed pulse and off when there isn't
     
  6. crutschow

    Expert

    Mar 14, 2008
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    In that case you could add another 555 (to bertus's circuit) to stretch out the width of the missed pulse time and drive the LED for a longer period to make it more visible. Otherwise you might miss seeing just one missed pulse.
     
    Last edited: Jan 1, 2013
  7. Teena123

    Thread Starter Member

    Nov 22, 2012
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    Okay Thank you for that information.
     
  8. Teena123

    Thread Starter Member

    Nov 22, 2012
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    But how will the other 555 timer circuit look like??
     
  9. crutschow

    Expert

    Mar 14, 2008
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    Google "555 one-shot"
     
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