Re: strange vttc

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

Original poster: "Eastern Voltage Research Corporation" <dhmccauley-at-easternvoltageresearch-dot-com> 

Yes, the wire adds significant capacitance and loading.
For the PlasmaSonic coils where each coil must be tuned to a different a
Fres (at least 20-40kHz) apart, a wire about 10-15" long is enough to
change the Fres by at least 20kHz.

Dan


 > As VTTC's typically have very small top loads, the addition of a 30" spark
 > would have a considerable impact on Fres.  It would be interesting to
 > repeat the signal generator measurement with a 30" piece of wire
simulating
 > a streamer.
 >
 > Regards, Gary Lau
 > MA, USA
 >
 >
 > Original poster: "claude masetto" <claudmas-at-optusnet-dot-com.au>
 >
 > Hello all,
 > I have been playing around with my vttc and have been taking some
 > observations with my scope and have noticed something strange. The res
 > frequency of the resonator as calculated by Java TC is 342khz. When I
 > measured it with a signal generator and a scope the result was 360khz.
Close
 > enough for me.
 > I then setup an antenna with a scope probe attached to it and measured the
 > resonator frequency with the the coil running and noticed it was 255khz.
The
 > coil is in tune, as best as I can get it because it performs great. Twin
 > 304tl tubes with 30" spark on a good day.
 > I can't understand the difference in the two measurements. I have checked
 > the results over and over.
 >
 > Claude.
 >
 >
 >
 >
 >