Re: Another SSTC Question

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

Original poster: "K. C. Herrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kchdlh-at-juno-dot-com>

Winston-
 
You might have an interest in my set of s.s. plans.  It's the documentation
I've used in designing/building my s.s. coil and it consists of the following,
with items in curly brackets >not< supplied :
 
Detailed circuit & assembly description (19 pp)
 
Drive Scheme; TCG44-L3, 9/7/01

Primary Interconnection Wiring; TCG44-3T, 6/9/02

Schematic Drawing, Control Circuit; TCG-CK2C rev. 6/4/02

Schematic Drawing, Main Circuit; TCG-CK1A rev. 3/2/02

Schematic Drawing, Pre-driver & Wand; TCG-AUX rev. 6/4/02

{Parts List; (KCH ref. F.E. database THUNDER)}

{Artwork/fab/assy Drawing, Top Assy & PC1; TCG-PC1 (as modified)}

Top Assembly Drawing, TCG-PUB; 1 sheet reduced and edited from dwg. TCG-PC1 and
not entirely as-built, rev. 6/17/02

{Artwork/fab/assy Drawing, PC2; TCG-PC2 (as modified)}

Fab/Assy Drawing, Control Box; TCG-CTL3 rev. 6/4/02

{U.S. Patent #6,069,413; (can be found at
<http://www.uspto.gov>http://www.uspto.gov)}

All supplied drawings are 11" x 17" CAD drawings except for the description
which is 8 1/2 x 11.  You can have a copy of the whole set (as noted) for $30
post-paid in the U.S.

Ken Herrick, 2160 Mastlands Drive, Oakland, CA 94611
On Tue, 09 Jul 2002 07:26:06 -0600 "Tesla list"
<<mailto:tesla-at-pupman-dot-com>tesla-at-pupman-dot-com> writes:
> Original poster: "Marry Krutsch by way of Terry Fritz 
> <<mailto:twftesla-at-qwest-dot-net>twftesla-at-qwest-dot-net>"
<<mailto:u236-at-earthlink-dot-net>u236-at-earthlink-dot-net>
> 
> Hi everyone.
> 
>         I'm trying to build a driver for my (future) MOSFETs, but 
> I'm not sure
> about a few things.  I want to isolate the signal electronics from 
> coil
> driving electronics using a ferrite toroidal xfmr (that's the right
> thing to do, right???).  The problem is, I can't get a "good" clean
> signal out of the transformer.  Depending on the pulse width and
> frequency fed to it, I get a bumpy output that ranges from positive 
> to
> negative (which I kind of expected, yet it isn't helpful).  I know 
> a
> noisy signal is OK, as long as there's enough power to saturate the
> MOSFETs.
> 
>         Also, is it OK to run a SSTC with BiPolar transistors?  I've 
> got a ton
> of them, and my previous futil attempts at a SSTC driver chewed up 
> all
> my MOSFETs and spat them out :-(.  I actually toasted a 600v unit 
> with
> only 30v in, although I only had a power diode across the transistor 
> for
> "protection" (which probably helped little, if at all).
> 
>         Have I got the right idea, or have I totally missed the 
> boat?  Please
> help.
> 
> Stumped (as usual),
> Winston K.
> 
> 
> 
>