Re: Strange sweep results

["Tesla list" <tesla-at-pupman-dot-com>]

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

In a message dated 6/18/02 9:36:44 PM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:



>
>     I immediately swept one of my small 2.5" coils.  And got the expected 
> Fres of around 833khz.  Sweet.  But, upon winding the generator up a bit 
> more, I ended up with another spike at 2.5mhz.
>
>    



A quarter wave resonator has peaks at 1/4 wave, 3/4 wave, 5/4 wave etc. Since
833 x 3 = 2500. What's the problem? If your sig gen output is not linear over
its range, that could explain why the two peaks are about the same size.
Matt D.