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
    4
    0
    [​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
    3,237
    619
    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
    4
    0
    Thank you! I use square wave input with 1000Hz and 10V peak-to-peak.
     
  4. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,777
    1,103
    What is the 'smalller value'?
    What is the signal source impedance?
     
  5. Dalila Damia

    Thread Starter New Member

    Oct 18, 2016
    4
    0
    P_20161013_103858.jpg output waveform for RL=22kOhm
    P_20161013_104150.jpg output waveform for RL=1kOhm
     
  6. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    Does t=RC help?
     
  7. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,777
    1,103
    Consider the time constant RL.C1.
     
  8. Dalila Damia

    Thread Starter New Member

    Oct 18, 2016
    4
    0
    Yeah thank you!
     
  9. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    That shape is a DC droop caused by not large enough capacitor.
     
Loading...