Date:   4/27/2010 10:34:19 PM ( 15 y ago)
Hits:   13,319
URL:   https://www.curezone.org/forums/fm.asp?i=1613348

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If you expand the Fourier series for a pulse train and evaluate the coefficients, a duty cycle of 25% would give you second harmonic one fourth the power level that the fundamental frequency is sending to the body.

A square wave (50% duty cycle) has minimal even harmonics, compared to a 25% duty cycle pulse train.
 

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