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Re: It works, But I want more. (fwd)
Bob Schumann wrote:
>
> David,
> I was in the same place before! I had a 9kv-at-30ma and was
> getting 15 inch sparks but wanted more. I went ot a 12kv-at-60ma
> transformer and got 31 inches. For that particular machine that
> was good enough for me. I would suggest just paralleling the
> 2 12kv trannys together and not all 4. Matched transformers seem
> to work best for ganging and I don't think the 9kv trannys will
> like being ganged up with 12kv!
>
> Safe coilin,
> Bob Schumann
>
> tesla-at-america-dot-com
> http://www.america-dot-com/~tesla
>
> >
> >---------- Forwarded message ----------
> >Date: Mon, 03 Mar 1997 21:51:17 GMT
> >From: David Christal <xtal-at-airmail-dot-net>
> >To: Tesla-list-subscribers-at-poodle.pupman-dot-com
> >Subject: It works, But I want more.
> >
> >Thanks to everyone for helping get my first coil off the ground.
> >
> >Especially Mike Hammer and Bert Pool, who helped and helped and
> >helped.
> >
> >Ok, here are the specs:
> >
> >corcom rf ac filter
> >
> >5a variac
> >
> >9kv x 30ma (I have another 9 x 30 and two more 12 x 30; just limiting
> >exposure to stupidity)
> >
> >1/2" spark gap
> >
> >2" pvc x ~100 turns 22 ga. chokes
> >
> >1 1/2" copper tube x 7 -at- .028" spark gap w/ muffin fan
> >
> >60" x 14" x .093ldpe rolled cap (.007995 uf per my Radio Shack meter)
> >
> >12" id 3/8" + 3/8 clearance x 10 turns 30 degree spiral primary
> >
> >6" clear acrylic tube x 24" (~900 turns) 22 ga. secondary
> >
> >5" x 12" drain pipe toroid (I know it's small but nothing happens with
> >the big one.)
> >
> >8 ' ground rod w/ 8ga. ground wire to base of secondary
> >
> >I get:
> > blue 15" streamers into air (they don't photograph well)
> >
> > occasional 15" white streamers to nearby grounded objects
> >
> > a few lines of interference on tv
> >
> >
> >I noticed that the primary works best wide open. Any reduction of
> >windings reduces output. Do I need a bigger primary coil or
> >jus mo juice?
> >
> >I'm ready to try some of these other transformers.
> >
> >I know I can strap xformers of equal value, and that's next
> >
> >Now don't laugh, I can't help that I don't know any better.
> >What about strapping all 4 of my neons together:
> >
> >----------------*|||*---------------
> > *|||*
> > *|||*
> >240vac ~140 *|||*12kv 30ma * 2
> > vac *|||*
> >single |-------*|||*-----| =~21kv -at- 60ma
> >phase | |
> > |-------*|||*-----|
> > *|||*
> > ~100 *|||* 9kv 30ma * 2
> > vac *|||*
> >----------------*|||*---------------
> >
> >
> >of course, even if it worked, I'd need another capacitor in series.
> >
> >
> >All comments and suggestions are badly needed.
> >
> >David Christal 3341 Cloverdale Lane, Dallas, TX 75234
> >214 349-6972 (214 FIX MY PC) (Pool Cues and Personal Computers)
> >
> >