Re: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 26 Jun 2007 21:53:15 -0700
From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)

I agree, streamer length of random free air spark lengths is not useful 
to predict top terminal voltage. This just can't be done. There are too 
many variables involved. We can guestimate, but that guestimate can vary 
a great deal.

The last item I remember for the TSSP: we were involved with accurately 
measuring the top voltage at the terminal. This is where the TSSP 
stopped (incase anyone is wondering). There were plenty of theory's of 
how to measure it, but there were just as many downfalls in about every 
theory (much debate and head scratching). I think the technology to do 
this was met with real concern to be accurate, and each possibility (the 
latest devices of the day) were looked at. Maybe the technology to do 
this is just beyond us. It was an amazing time in the TCML. I hate to be 
broken, but when it comes to top terminal voltage, this is not a trivial 
task for a high frequency/high voltage resonant transformer. Without 
considering a lot of the detail, some will say "use a capacitive 
divider" or other mechanism, but those have all been considered (believe 
me). It was those type of discussions that were debated. If we could 
actually measure top voltage without affecting the resonant status of 
the coil, the project might actually continue. The future in this area 
is completely open.

Take care,
Bart

Tesla list wrote:

>---------- Forwarded message ----------
>Date: Fri, 29 Jun 2007 08:54:33 -0400
>From: "Lau, Gary" <Gary.Lau@xxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: RE: Jonathon's 6" Coil (fwd) -> Streamer length to voltage
>
>I thought that the consensus was that streamer length is not a useful
>predictor of voltage.  I think TC sparks are like Jacobs Ladder sparks,
>in that they grow over time from a much smaller length that IS based on
>the actual voltage.  How TC sparks grow and how far they'll grow is
>based on many factors that are not well understood.
>
>In all the years I've been on this list, I've not heard of anyone
>devising a method of actually measuring the topload voltage.  The best
>that may be done is equating the primary bang voltage/energy to
>secondary voltage/energy and coming up with a theoretical maximum Vsec,
>assuming no (ha!) losses.  I guess no one can prove your claimed voltage
>wrong so you can claim anything you like (unless you exceeded the
>theoretical maximum), but in scientific circles, there would be
>skepticism.
>
>I too would be interested in where your length-to-voltage data
>originated, and more importantly, how it was verified.
>
>Gary Lau
>MA, USA
>
>  
>
>>Date: Thu, 28 Jun 2007 15:43:54 -0500
>>From: resonance <resonance@xxxxxxxxxxxx>
>>To: Tesla list <tesla@xxxxxxxxxx>
>>Subject: Re: Jonathon's 6" Coil (fwd)
>>
>>Nice to hear you have your coil running properly.
>>
>>BTW, 46 inch streamers represent around 240 kV in Tesla coil service.
>>
>>Resonance Research Corp.
>>www.resonanceresearch.com
>>    
>>
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