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Homework Help: Electricity - Half wave rectifier

  1. Mar 19, 2007 #1
    1. The problem statement, all variables and given/known data

    A half wave rectifier is supplying a load current of 100 mA. The input frequency is 60 Hz. Find the capacitor value required to limit the ripple ot 160 mVpp.

    Really... I can solve this I'm sure... But I'm wondering what formula I need to use... I've never been shown one in class, and I don't have a textbook, so a little help with a formula would be nice...
  2. jcsd
  3. Mar 20, 2007 #2
    its V = IR
  4. Mar 22, 2007 #3
    somebody please?
  5. Mar 22, 2007 #4


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    Homework Helper

    I think the equation you're looking for is [tex]V_r=I_{dc}/fC[/tex].
    Where Vr is the ripple voltage, Idc is the direct current, f is the frequency of the supply voltage, and C is the capacitance. But I would do a search for something like "half-wave rectifier capacitor filter" to learn about it and be sure that you agree with it. OK? I don't want to mislead you.
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