RE: Streamer V/I evolution - Topics Moderator note

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 02:16 PM 7/20/2005, you wrote:
> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>
> A
> I will try to play with this too.  My top voltage is monitored 
> remotely, unlike your "dream system", so I really don't have numbers 
> there but the waveforms should "look" right.  My tiny sparks are also little...


That's the advantage of looking at frequencies, rather than absolute 
levels.  The calibration of the probe doesn't make as much 
difference, and the difference in frequency would be quite small, so 
the frequency dependent aspect won't be as big a problem.

Take a coil resonant at 300 kHz, with a 50 pF total 
capacitance.  Adding 5 pF for a streamer will only pull the apparent 
resonant frequency down by sqrt(50/55) to 286 kHz.  Well.. maybe we 
CAN detect it.. I was thinking we'd need to measure very small 
changes (hertz, not kHz)

There's still the effect of the coupling to the primary, and, for 
that matter the lossyness.  A bare primary rings down with a straight 
line, not an exponential, as I recall, because the loss element 
(spark gap) is nonlinear.