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Re: primary design
>
> Original Poster: "Tom Stathes" <newphreak_16-at-yahoo-dot-com>
>
Hi Tom,
Well, I with a flat primary using 0.25" Cu tubing and 0.25" space between turns
and 1.25" space between secondary and primary, your looking at tuning in at
about 7 turns with a top load assumed of 24pF (8" x 22" toroid). Personally, if
you have the capability to reduce the cap size to 1/2 (0.15uF), then you could
add more turns to your primary at about 10 turns. I think you would be better
off with twice the inductance of Lp (7 turns to 10 turns doubles your
inductance). This is from reports to the list and from my own experience with
my coil.
Bart
>
>
> Ok, heres the scoop everyone. For some reason i can never seem to make a
> decent primary coil.
>
> My powersupply is 10kv at ~130ma
>
> the tank cap is .033uf
>
> my secondary is 902 turns of #24 wire on a 4.5 in OD PCV pipe
>
> i have a static (3 gap) unquenched spark gap
>
> Does anyone have any suggestions on how to go about building a primary coil
> for
> these specs.
>
> I have onky used the standard vertical primary in the past, i was thinking
> about going with a saucer or flat primary.
>
> Any help would be greatly appreciated.
>
> --Tom
>
> Ps if you would like to check out my pathetic older coil heres the url to my
> site,
>
>
> <<http://us.f11.mail.yahoo-dot-com/js/members.theglobe-dot-com/tesla_tom>http://us
> .f11.mail.yahoo-dot-com/js/members.theglobe-dot-com/tesla_tom>members.the
> globe-dot-com/tesla_tom (its in the pics section).
>
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