The full-wave diode bridge rectifier

Discussion in 'Homework Help' started by dimitris127, Nov 9, 2012.

  1. dimitris127

    Thread Starter New Member

    Nov 9, 2012
    Hello there
    I have homework on a full bridge non controlled rectifier
    Task A asks me to find some values,the thing is i get confused on the info given for this bridge,
    It says that the input voltage to the bridge Vs is sinusoidal with RMS value of 25V at 50Hz and the Load is 10ohms,
    what confuses me is that i don't know wether the rms is given is the Vrms or just rms,the first value i need to find is the dc value of the output voltage,i know which equation to use but not how to find the Vmax from the info given,can someone help me a bit on Vmax?
    Thank you for your time
  2. debjit625

    Well-Known Member

    Apr 17, 2010
    This statement means your question its given 25VAC RMS input and RMS is 0.707 of Peak i.e.. Vmax

     25 = 0.707 * Vmax

     Vmax = {25\over0.707}

     Vmax = 35.36

    Good Luck
  3. dimitris127

    Thread Starter New Member

    Nov 9, 2012
    Thank you very much debjt625,
    i should be able to do the rest of task A with this,i will update if i'm stuck on anything else
  4. Audioguru


    Dec 20, 2007
    You did not say that the rectifier feeds a smoothing capacitor so the output voltage has a lot of up and down ripple at 100Hz.
    Here is the result: