UTP and LTP for Schmitt trigger

Discussion in 'Homework Help' started by KJM, Oct 22, 2014.

  1. KJM

    Thread Starter New Member

    Oct 22, 2014
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  2. Papabravo

    Expert

    Feb 24, 2006
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    Ask yourself what voltage appears at V+ when Vo is 3.3V. Then ask yourself what happens at V+ when Vo is -3.3V. Those will be your answers.
     
  3. KJM

    Thread Starter New Member

    Oct 22, 2014
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    Thanks alot!!!!:p:p
     
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    You have to make a large assumption: What is the Voh and Vol of the opamp when it is powered with +-3.3V? Not all opamps will pull their output pin all the way to +3.3V or -3.3V.
     
  5. Papabravo

    Expert

    Feb 24, 2006
    10,175
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    You are correct for a real part. Since he didn't have an actual part number it seemed like the OP was using a simulator, and an ideal part. We have to leave a few surprises for the simulation junkies when they transition to greasy thumb engineering.
     
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