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Homework Help: Half rectified sine wave

  1. Jan 20, 2012 #1


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    1. Calculate the waveform frequency and form factor of a half rectified sine wave

    Ipk = Peak current = 11A
    Tp = Pulse time of sine wave = 0.02s
    T = Period = 0.035s

    2. I have used the equations:

    Irms = Ipk*sqrt(f*Tp/2)
    Iave = (2*f*Ipk*Tp)/pi
    f = 1/T

    3. I have waveform frequency as 1/0.035 = 28.57Hz

    I have Irms = 5.88A and Iave = 4.00A and therefore form factor = 5.88/4.00 = 1.47.

    Does this look correct?

    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Jan 20, 2012 #2


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    Staff: Mentor

    Presumably your equations for Irms and Iave represent suitable approximations, in which case your results are good.
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