Re: Small coil of Richard Hull's

• To: tesla-at-pupman-dot-com
• Subject: Re: Small coil of Richard Hull's
• From: Richard Hull <rhull-at-richmond.infi-dot-net> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Wed, 25 Nov 1998 06:40:22 -0700
• Approved: terryf-at-verinet-dot-com

Tesla List wrote:

> Original Poster: "Guy Wilson" <wilson-at-vossnet.de>
>
> I would also be very interested in this type of small coil as a start. I
> have a couple of small NSTs so these would be ideal.
>
> >Original Poster: Matthew Mills <Matthew.Mills-at-santos-dot-com.au>
> >
> >Subject:  Small coil of Richard Hull's
> >
> >A while ago I remember seeing a post by Richard Hull saying that while he
> >was taking a rest from his Fusor work that he built a small coil that put
> >out about 12 inch sparks with 30 watt input using a 3000v NST.

I seem to remember a 6" spark arc from this system at 30w and the NST was a
burned out 9KV unit with only one half alive.  The cap was a .008ufd unit
and it
had a 20 gap tungsten series gap.  Tapped where ever it worked best.  I still
have half that gap (10 gaps) all are spaced at ~.003".  The secondary was
an  8"
tall 3" diameter thingy with #30 wire and a 12"X3"" toroid was used.  I
believe
that it took between 80 and 100 watts to hit 12" and the arcs were thin and
stringy due to the resonant frequency begining rather high.  Whatever it was.
All sparks were to a grounded pointed rod.  Also, I have never taken much rest
from fusor work I would think it is more of a break from Tesla coilin'.  This
might have been the system of  the Xmas work in 1996.  So many coils ago.

Richard Hull

Richard Hull

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