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Homework Help: Harmonics of a Square Wave

  1. Feb 8, 2007 #1
    Harmonics of a Square Wave....

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

    A 200kHz square wave with a fundamental frequency amplitude of 15V. Find amplitude of the third harmonic.

    2. Relevant equations

    This is what I do not know. I know this is a fourier transform problem but just don't know what to do with it.

    3. The attempt at a solution

    I just took 15V and substracted (1/3) from it to get 14.6667 Volts.
  2. jcsd
  3. Feb 8, 2007 #2
    You need to do the transform, or at least look it up. The amplitude coefficients are expressed as a function of harmonic. Post the FT and we can help if still confused.
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