Re: SSTC does 10 foot sparks

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

Original poster: "Steven Ward" <srward16-at-hotmail-dot-com> 

David

Comments


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: SSTC does 10 foot sparks
>Date: Fri, 18 Jun 2004 14:47:29 -0600
>
>Original poster: "David Rieben" <drieben-at-midsouth.rr-dot-com>
>
>Steve,
>
>This is a very impressive power vs spark length ratio! I
>may have to consider giving up on the pig coils and try
>to build one of these SSTC  coils to get that kind of
>performance. I fear that I, like some of the others have
>mentioned, am too unfamiliar w/ solid state electronics
>to comfortably take on building a SSCT of this magnitude. I know that IGBTs
>of this magnitude don't
>come cheap if you fry one or two of them in the learning
>process :^O

Yeah, ive been doing the solid state stuff for awhile and worked my way up.
There is a lot to learn, luckily i still have a lot of free time even 
though i started college as a freshmen this year.  Luckily i havent lost 
anything on the big coil yet, though i blew handfulls of IGBTs on the 
smaller one.



>BTW, are these 10 ft streamers as loud as equivalent 10
>ft streamers from a pig driven coil pulling around 7 to 8
>kVA?

Oh you better believe it!  Power arcs are somewhat louder and nastier 
sounding than just streamers... but this does plenty of power arcs ;)

I figure that they probably aren't just because the
>absence of a SG if for no other reason.

Ehh, in my experience the actual streamer output is much louder than the 
gap.  I think most of the noise comes from the secondaries output, unless 
you have maybe a really small TC that only does a few inches of spark.  The 
IGBTs (From what ive been told) just make little clicks ;).

Steve


>David Rieben
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Friday, June 18, 2004 11:52 AM
>Subject: Re: SSTC does 10 foot sparks
>
>
> > Original poster: "Steven Ward" <srward16-at-hotmail-dot-com>
> >
> > Oops, forgot to mention the power consumption is less than 4800W... not
> > exactly sure because i dont have a watt meter that big but i have it both
> > fused and breakered to 20A and even after quite long runs it has never
> > popped the fuses or breakers.  My guess is around 4kw to make 10 foot
> > sparks.  Solid State is the only way i would ever have a coil this large
>at
> > my house... i cant really feed a pig on my 20A line.

_