Re: Coil Frustration

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

Original poster: "jpeakall by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jpeakall-at-mcn-dot-org>

CJ,

The first things a lot of folks are going to say is they want more info. How
are the caps connected? I assume in series to lower their value. Even so,
your cap value may be too high for your power supply. As well, it sounds
like your primary may be too short. Where does the coil tune? Close to
either end? .5 of an inch for the spark gap sounds too wide to me, try it
closer. With my coil the biggest performance increase came from making a Lau
style vacum gap. Very cheap and took me 3 hours to make, and made a HUGE
difference in performance.

Jonathan Peakall

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, June 26, 2001 8:16 PM
Subject: Coil Frustration


> Original poster: "CJ Moore by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<wizard1234-at-home-dot-com>
>
> I am somewhat of an amateur builder. I have made 2 coils. 1) was horribly
> pathetic and I won't even discuss it
> however, the second was in my opinion a decent small coil.
>
> Powersupply - 2x Ignition transformers 10 kv 23 ma (in parallel_
> Spark gap - series 4 bolts total gap of about .5 inches
> Capacitor - 2x .02 uf 1500 kv
> Primary - 7 turns of 3/4 inch copper refrigerator tubing (rising pancake
form)
> Secondary - 26 inches high 9 inch diameter wound with 22 gauge wire
> Toriod - Ventilation Duct (didn't work at all) just went with a copper
> terminal.
> 2 RF Chokes which were just pieces of pipe with about 200 turns of 22
gauge
> wire on them.
>
> With this system running, I would get a faint (really really faint) corona
> around the terminal, and if I put a grounded wire near it, maybe a 4 inch
arc.
>
> I have seen other coilers pages and pictures and some people have built
coils
> very similar to mine, but with much much better results, please tell me
what I
> am doing wrong!
>
> Here's a link to some pictures of my coil.
> I have made some modifications (but don't have pictures) This is my first
spark
> gap, not the one I use now. Don't think the transformers are hooked up
> correctly.
> Just for a general idea.
> <http://members.home-dot-net/fredmoore/>http://members.home-dot-net/fredmoore/
>
>
>
>