Re: Coil Doesn't Fire

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi,

I was thinking the primary resonant frequency may be too high and he can't 
tune down the the frequency of his secondary.  Maybe go to 10nF of primary 
cap or use an added primary inductor to get the primary frequency 
down.  Two inch sparks usually are miss-tuning to me...

Cheers,

         Terry



At 10:04 PM 9/15/2004, you wrote:


>Try a 12 kV 60 mA and see if it fires.  Or, use two 12/30s in parallel.
>
>Dr. Resonance
>
> >
> >
> > Hey I bet no one has had this problem. Just kidding!
> >
> > Transformer:
> > 12,000 Volt 30 ma
> >
> > Caps
> > Panasonic ECW-H 0.0043uf +- 3% W.V. 1500 VP-P 2500 VDC with a 1 megaohm
> > bleeder resistor across each cap. 8 in series 12 parallel.
> >
> > Secondary
> > 21" of 22 guage wire on a 4 1/2 inch PVC Pipe
> >
> > Primary
> > 14 turns of 3/8 copper tubing mounted on 3/4 inch plastic risers set at 30
> > degrees. The inner radius is 5 1/2inches.
> >
> > Torid
> > 22 inch major radius of 4 inch flexible dryer duct mounted on aluminum
>foil
> > covered 1/4 inch plywood.
> >
> > Spark Gap
> > Air cooled at 25 psi
> >
> > Grounding
> > 2- 4 foot ground rods driven into ground and soaked with h2o.
> >
> > I believe my caps are the major source of the prolem however someone
> > pointed out that my transformer is a little small too.
> > Any other thoughts?
> >
> > JIM
> >
> >
> >
> >