Output waveforms for two values of RL

Discussion in 'General Electronics Chat' started by Dalila Damia, Oct 18, 2016.

  1. Dalila Damia

    Thread Starter New Member

    Oct 18, 2016
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    [​IMG]
    Hello! Why the output waveform is different when 22k Ohm RL is change to smaller value? What is the significance of this change in output waveform?
     
  2. dl324

    Distinguished Member

    Mar 30, 2015
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    Welcome to AAC!

    What is the frequency, amplitude, and type of waveform for the input.
     
  3. Dalila Damia

    Thread Starter New Member

    Oct 18, 2016
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    Thank you! I use square wave input with 1000Hz and 10V peak-to-peak.
     
  4. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    What is the 'smalller value'?
    What is the signal source impedance?
     
  5. Dalila Damia

    Thread Starter New Member

    Oct 18, 2016
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    P_20161013_103858.jpg output waveform for RL=22kOhm
    P_20161013_104150.jpg output waveform for RL=1kOhm
     
  6. BillB3857

    AAC Fanatic!

    Feb 28, 2009
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    Does t=RC help?
     
  7. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Consider the time constant RL.C1.
     
  8. Dalila Damia

    Thread Starter New Member

    Oct 18, 2016
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    Yeah thank you!
     
  9. #12

    Expert

    Nov 30, 2010
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    That shape is a DC droop caused by not large enough capacitor.
     
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