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30 BPS, 60 BPS tests




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From:  Jim Buck [SMTP:jimbuck1-at-bellsouth-dot-net]
Sent:  Tuesday, March 17, 1998 5:11 PM
To:  Tesla List
Subject:  Re: 30 BPS, 60 BPS tests

Tesla List wrote:
> 
> ----------
> From:  Bert Hickman [SMTP:bert.hickman-at-aquila-dot-com]
> Sent:  Tuesday, March 17, 1998 9:07 AM
> To:  Tesla List
> Subject:  Re: 30 BPS, 60 BPS tests
> 
> Tesla List wrote:
> >
> > ----------
> > From:  John H. Couture [SMTP:couturejh-at-worldnet.att-dot-net]
> > Sent:  Tuesday, March 17, 1998 12:36 AM
> > To:  Tesla List
> > Subject:  Re: 30 BPS, 60 BPS tests
> >
> > At 12:16 AM 3/12/98 -0600, you wrote:
> > >
> > >----------
> > >From:  Robert W. Stephens [SMTP:rwstephens-at-headwaters-dot-com]
> > >Sent:  Wednesday, March 11, 1998 12:27 PM
> > >To:  Tesla List
> > >Subject:  Re: 30 BPS, 60 BPS tests
> > >
> > >> From:  John H. Couture [SMTP:couturejh-at-worldnet.att-dot-net]
> > >> Sent:  Monday, March 09, 1998 11:22 PM
> > >> To:  Tesla List
> > >> Subject:  Re: 30 BPS, 60 BPS tests
> > >
> > >John Couture wrote:
> > >
> > >>   Because the TC system contains capacitors it has the ability to store
> > >> electrical energy over more than one spark gap operation. This means the
> > >> electrical energy can build up in the secondary circuit and provide one
> > >> extra long random spark. This type of operation is obvious because the
> > >> random sparks emitted from the secondary terminal are not of the same length
> > >> indicating different amounts of voltage and energy on the secondary terminal.
> > >
> <SNIP>
> 
> John,
> 
> Sorry - I've got to agree with Malcolm and Rob here...
> 
> With the base of the secondary coil grounded, a typical coil/groundpath
> resistance of less than 1 kOhm, and typical coil and terminal
> capacitance of 50 pF, the amount of time that any residual static charge
> to fully dissipate would be a maximum of 250 nSec. The bang-to-bang time
> is about five orders of magnitude longer than this... No residual ES
> change will be there. Other gas-discharge phenomena under repetitive
> sparking conditions are much more probable explanation for varying
> spark length...
> 
> -- Bert --

After reading this thread for a while I just wanted to throw in my 2
cents worth.

Couldn't varying spark length be due to simple observable things?  If a
spark has fewer smaller branches doesn't the extra energy remain in the
main spark channel?  Also what about when a spark straightens out?  And
finally if the voltage rises and the current drops (same energy) doesn't
the spark get longer and thinner?

Jim Buck