Re: More Coupling...

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

Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>

Hi Pete,

Check out the data from Paul's TSSP project at:

http://www.abelian.demon.co.uk/tssp/pn2510/

You will notice that the voltage dV/dL is greatest about 25-30% up the
coil!!  The old sine function for secondary voltage is long gone now...
The current is like 40% higher in the lower section of the coil than at the
base!!

However, these charts are for steady state...  Who knows what the transient
"real" input functions will come up with when plugged into Paul's models!!
The time dimension (let along streamer loading) is still a frontier in all
this extraordinary fun!!!!

I am sure Paul's project will shed light if not solve the details of racing
arcs.  Only now are these arcs revealing their odd secrets to us.  You may
also want to check my paper at:

http://hot-streamer-dot-com/TeslaCoils/MyPapers/NSVPI/NVSPI.htm

But that is all still steady state stuff...  The data is coming in hot and
heavy now but it is making sense....

Cheers,

	Terry


At 08:09 PM 12/21/2000 -0800, you wrote:
>Terry,
>      what you say makes sense if you believe the "sinusoidal" voltage
>pattern with an antinode at the top where dv/ds=0 and a node at the bottom
>where dv/ds=max (s=axial position), and I have no reason not to believe it.
>
>However, I seem to have had the most racing sparks in the middle of my 
>secondary, not at the bottom. I had thought this was because a high K 
>caused resonances at harmonics above the fundamental F of the secondary...
>
>Are harmonic resonances real, could this explain any racing sparks, are
>they really related to K?
>
>-Pete.
>
>(ps, I'm not talking about sparks from secondary to primary, rather just
>from winding to winding on the secondary, and usually across many turns
>at a time, like 2 inches away)
>
>(pps, without real test equipement (ie an oscilloscope) I feel like a 
>blind man wandering around in a dark room...)
>
>
>>Hi Pete,
>>The bottom of the coil has the highest voltage per inch and thus the chance
>>of arcing is highest there.  "I" think that pure transformer action has a
>>lot to do with it also.  When you lower the k the stress is reduced which
>>helps stop the arcs.  However, there are still many unanswered questions in
>>this area...
>>Cheers,
>>	Terry
>
>