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Re: TANK CIRCIUT AND PRIMARY CONDUCTOR CHOICES
In a message dated 4/9/99 1:59:35 AM Pacific Daylight Time, tesla-at-pupman-dot-com
writes:
> Original Poster: CHURCHMON-at-aol-dot-com
>
> Hello fellow coilers,I have a question reguarding conductor choices in
both
> the tank circuitry and the primary coil. Hopefully somone on the (tesla
list)
>
> can help .So far I have seen flat strap,ref. tubing ,and heavy guage
> wire.Which would give the best performance?
>
> Currently,I have a 8"x 28" coil powered by two 15/60's with a vertically
> stacked cap.(.027uf) and a series gap. The coil itself has 16 gauge wire
on
> the secondary and the freq. is(234khz. loaded) with a 6"x 20" toroid.The
> primary is a flat sprial made of 1/2" ref. tubing (11 turns tapped at the
> 6th
> turn).
>
> So far max.spark is 42" and I think there is more potential. There must
be
> some info. dealing with the certian size of conductors and the dia.of the
> material used depending upon power,volts,current and coupling
> characteristics. I am planning on using either 1/4",3/8,"or 1/2" dia.
> tubing.Any help is appreciated.
>
> Thanks, Mike Church (CHURCHMON)4/8/99
>
Mike,
If I was designing an 8.0" coil today, I would use a flat primary made from
.50" dia copper tubing wound with either 3/8" or 1/2" spacing between
windings. Just exactly what you are using. With a 15 kv 120 ma power
supply, I would expect better performance. Have you adjusted the coupling
between the primary and secondary? Can you describe the gap in more detail?
The coil can certainly use more toroid like at least twice what you currently
have and up to three times if you have enough power supply to break it out.
With the right set up, your coil should be able to produce 10 foot sparks.
Ed Sonderman