Re: NSTand PT replacement xmfrs

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

Original poster: "Jim Mitchell" <Electrontube-at-sbcglobal-dot-net> 

That may be true, but not everyone has the money, time, expertise, tools,
etc to build a solid state coil.  A spark gap coil is much simpler to
trouble shoot, and get working, and can be more reliable.

Regards - Jim Mitchell
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, May 30, 2004 8:19 PM
Subject: Re: NSTand PT replacement xmfrs


 > Original poster: "Eastern Voltage Research Corporation"
<dhmccauley-at-easternvoltageresearch-dot-com>
 >
 > Yes, but keep in mind at the same time solid state tesla coil technology
is
 > moving ahead at blazing speed.
 >
 > No more are you required to obtain a "hard-to-find" and HEAVY high voltage
 > transformer, or build a mechanically
 > complex spark gap.  With a few simple off-the-shelf parts, you can build a
 > solid state coil that OUTPERFORMS a
 > spark gap coil (power vs. power).
 >
 > So, although these high voltage transformers are getting more difficult to
 > find, they are no longer a requirement to have a tesla coil
 > putting out some serious arcs.
 >
 > Look at the recent achievements . . .
 >
 > Jimmy Hynes (>85" arcs Solid State DRSSTC)
 > Daniel McCauley (80" arcs Solid State ISSTC)  only 1.5kW input power
(real)
 > Steve Ward (>65" arcs Solid State ISSTC)
 >
 > And don't forget the all the OLTCs as well.
 >
 > Dan
 >
 >
 >
 >  > As most experimenters are aware high powered NSTs are slowly going away
to
 >  > be replaced by ground fault limiting devices built into the xmfr.  New
PTs
 >  > are very expensive and require external current limiting which is also
 >  > expensive due to the high cost of suitable cores.
 >  >
 >  > We have been working with and patiently waiting for a company to
provide
 > us
 >  > with a replacement I designed nearly 1 yr. ago.  Finally, my patience
has
 >  > worn out as they are too busy to make small batch runs of coils for us
to
 >  > test --- this due to a new factory going up in China.
 >  >
 >  > I am now working with 2 other companies, not as large, who seem to be
 >  > interested in my project --- at least enough to provide us with some
 > 'test"
 >  > coils and cores.
 >  >
 >  > Our goal is to have a working acceptable xmfr developing 16 kV (CT
 > grounded
 >  > like a neon) at 250 mA and current limited so an external reactor will
not
 >  > be requires.  A pair or trio of these connected in parallel could form
the
 >  > equivalent of a pole xmfr without the required external reactance.
 >  >
 >  > It appears this might happen soon --- perhaps by the end of July or
 > better.
 >  >
 >  > A lot of experimenters have contacted me off-list and declared interest
in
 >  > this xmfr.  It hopefully will soon be a reality.  I trust by mid-July
to
 >  > have availability and pricing available to those experimenters.
 >  >
 >  > Keep the faith,
 >  >
 >  > Dr. Resonance
 >  >
 >  >
 >  >
 >  >
 >  >
 >  >
 >
 >