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

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 1 Jul 2007 11:15:55 -0400
From: "Lau, Gary" <Gary.Lau@xxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: RE: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)

Yes - well summarized.  Perhaps the take-home message is that it's
currently pointless (IMO) to describe a coil as a 240kV or whatever
device (except perhaps in eBay ad text aimed at those who don't know
better).  I think the only quantifiable and verifiable measure of
performance of a coil is streamer length.  Granted, this is a very
incomplete metric, as length is a tradeoff with brightness, and some may
value brightness over length.

Regards, Gary Lau
MA, USA

> ---------- 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
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
> >
>