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Re: Measuring secondary resonant frequency



Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Parpp807-at-aol-dot-com>

In a message dated 2/11/01 12:14:25 PM Central Standard Time, 
tesla-at-pupman-dot-com writes:

<< Excite the base of the
 secondary with a square wave, with a frequency about 20 times smaller
 than the resonance frequency >>

I have used the sine wave output of the sig gen to find Fo. 
What is the advantage in using a square wave to find Fo?

Thanks,
Ralph Zekelman