RE: 'true" spark length was Re: Desktop Bipolar Coil

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

Original poster: "John H. Couture by way of Terry Fritz <teslalist-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>



Steve -

As you are using controlled sparks I will be very interested in your tests.
How will you be measuring the watts input?

The concept of Tesla coil volume affecting spark length has been mentioned
in the distant past. I think I even have a equation using the TC volume
parameter.

Johm Couture

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-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Friday, July 04, 2003 7:43 PM
To: tesla-at-pupman-dot-com
Subject: Re: 'true" spark length was Re: Desktop Bipolar Coil


Original poster: "Stephen Conner by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <steve-at-scopeboy-dot-com>

I think the bps at which streamer growth starts depends very strongly on
the size of the coil. My reasoning is that it's a surface area to volume
ratio thing: A big volume of plasmafied air keeps its heat longer than a
small one.

I'll do some growth measurements this weekend and try and make a length vs.
bps graph or something.

P.S. I use the controlled spark method for all my measurements.

Steve C.

At 12:36 04/07/03 -0600, you wrote:
 >Original poster: "jimmy hynes by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 ><chunkyboy86-at-yahoo-dot-com>
 >
 >Hi,
 >
 >I wouldn't have thought that the streamer growth would
 >have made that much of a difference, at such a low
 >break rate, and such a small coil. If I remember
 >correctly, Steve's mini OLTC didn't show streamer
 >growth until around 400 bps.