Output voltage waveforms of diode circuits

Discussion in 'Homework Help' started by boks, Oct 28, 2008.

  1. boks

    Thread Starter Active Member

    Oct 10, 2008
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  2. mik3

    Senior Member

    Feb 4, 2008
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    Is Vi an AC voltage source?

    Do you assume that the diodes are ideal?
     
  3. boks

    Thread Starter Active Member

    Oct 10, 2008
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    Yes, the diodes are ideal. Their turn on voltage is 0.7 V. Vi = Vosin(wt)=5sin(wt)

    I assume circuit A will clamp voltages lower than - 0.7 V, while for circuit B the output will be clamped to +- 0.7 V? No idea when it comes to C though.
     
  4. mik3

    Senior Member

    Feb 4, 2008
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    Circuit A will clip voltages greater than 0.7 volts
    Circuit B will clip voltages greater than 0.7V and less than -0.7V
    Circuit C will clip voltages greater than 2.7V and less than -2.7V
     
  5. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Circuit C will clip voltages greater than 2.7V and less than 1.3V.
    This was homework. We should have asked to see the OP's answers first.
     
  6. mik3

    Senior Member

    Feb 4, 2008
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    Thanks RonH for the correction, i was not very careful.
     
  7. boks

    Thread Starter Active Member

    Oct 10, 2008
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    You mean greater than 2.7V and less than -1.3V?
     
  8. beenthere

    Retired Moderator

    Apr 20, 2004
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    No, he meant just what he posted. You might get some useful knowledge by looking into the conduction characteristic of a diode.
     
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