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RE.wnat is rms value

Discussion in 'Electronic Basics' started by GPG, May 6, 2004.

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  1. GPG

    GPG Guest

    Root of the Mean of the Square
    You must first square the sine, this will give you a sine at twice the
    "frequency", sin^2a = .5(sin2a + 1)
    This result is a sine wave that has a minimum value of 0 and a max of
    1
    The mean by inspection is .5
    The sqrt of .5 is 1/sqrt2
    Can read from 40tude but only able to post via google, hence the RE
    Explained this once by getting the questioner to draw it on a bit of
    graph paper, he got it at once.
     
  2. GPG

    GPG Guest

    Oops should be .5(1-cos2a)
     
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