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Re: SSTC does 10 foot sparks

Original poster: "David Rieben" <drieben-at-midsouth.rr-dot-com> 


To quote a famous Virginia Slim cigarette advertisement slogan, "You've come
a long way, baby" when it comes to spark length/performance from an SSTC!
Until now, I
have never really wanted to waste much time with SSTCs
as they were rather inefficient as far as power input vs. spark length
output was concerned when compared against SGTCs. Also, SGTCs were
electrically simpler to
build. However, with the recent strides in IGBT driven
SSTCs, this has all changed and it now seems that a well
built ISSTC can even OUTPERFORM its SG counterpart with the same writhing,
lightning-like stream-
ers that the SG coils are so well know for.

Anywho, I would certainly appreciate it if you could send me some more
detailed info on your coil off list, as I
believe that I'd now like to take the ISSTC plunge 8^)))

David Rieben

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, June 22, 2004 7:35 AM
Subject: Re: SSTC does 10 foot sparks

 > Original poster: "Steven Ward" <srward16-at-hotmail-dot-com>
 > Hmm,
 > Good question, how do we measure the input/output power?  I dont know
 > myself and wasnt sure it really even mattered, aside from being reasonably
 > close and honest with my guesses.  Someone wanna seal up a TC in a big
 > styrofoam container and see how much heat we create? hehehe.  Seriously, i
 > cant myself afford such measuring equipment other than some cheap ammeters
 > and a small wattmeter (that is too little for this coil).  What i *can* do
 > is use previous knowledge gained from my first prototype and others work
 > make good guesses at things like how much power im using and what
 > The other thing i can rely on is simulation results from pspice.
 > The way i see it is, i havent blown the 20A fuse yet and ive had several
 > long runs so far (telling me it likely isnt pulling more than 20A).  Other
 > thing is that my coil slightly beats Freau's spark length formula... well
 > this makes perfect sense, no gap losses (and i will tell you, my power
 > components arent wasting much at all, they run cold to the touch).
 > So i guess whats most important to me (and likely many others) is that you
 > can get 11 foot sparks (i hit 11'4" the other night) on a 20A 240V line
 > without popping breakers and without a pig.
 > Steve
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: tesla-at-pupman-dot-com
 > >Subject: Re: SSTC does 10 foot sparks
 > >Date: Mon, 21 Jun 2004 08:03:02 -0600
 > >
 > >Original poster: "john cooper" <tesla-at-tesla-coil-dot-com>
 > >
 > >Very intersting stuff, how do we agree on a baseline or procedure for
 > >energy in/energy out measurements?  Or am I asking too much?  I'd be most
 > >interested in someone describing and identifying the
 > >techinques necessary, then we can either follow those procedures or 'wave
 > >our dix in the air' claiming whatever.
 > >John
 > >
 > >---------- Original Message ----------------------------------
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >Date:  Sun, 20 Jun 2004 17:03:02 -0600