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Re: GNATS meeting, and harmony/synergy

Subject: 
            Re: GNATS meeting, and harmony/synergy
       Date: 
            Tue, 25 Mar 1997 23:14:56 -0800
       From: 
            Open Minded <"unknown-at-apc-dot-net (No spamming! Try
\"70314.1744"-at-compuserve-dot-com~but_remove_this_part!~.pupman-dot-com>
Organization: 
            I'm NOT organized!
         To: 
            Tesla List <tesla-at-pupman-dot-com>
        CC: 
            tesla-at-poodle.pupman-dot-com
 References: 
            1


Tesla List wrote:
> 
> Subject:
>         Re: GNATS meeting, and harmony/synergy
>   Date:
>         Sat, 22 Mar 1997 22:44:25 -0500 (EST)
>   From:
>         richard hull <rhull-at-richmond.infi-dot-net>
>     To:
>         Tesla List <tesla-at-pupman-dot-com>
> 
> >
> >
> >Richard -
> >
> >  What about a rotary? I've got 0.06uF worth of primary C, and am
> >running about 3-3/4 turns on my primary. No flames, but wicked
> >6' sparks out of the coil...I guess I did something right.
> >
> >- Brent
> >
> >Brent,
> 
> You did do something right!  You, obviously, built a first class rotary
> capable of handling the quench times required for you coupling.  Rotary
> gaps
> usually are only required if a coil goes to 5KW or above, are heavily
> coupled, or  are loaded with tank C and little primary L.
> 
>  In the good ole days I got 6 feet out of my first really large coil
> (large
> for that time) with .025ufd and 13 turns in the primary.  The system
> used 3
> 12KV 60 ma transformers in parallel.  It used 12 series cylinder static
> gaps
> which were fan cooled.  Most anything works in Tesla coils as long as
> the
> design is synergistic.
> 
> Richard Hull, TCBOR


Richard -

  Agreed. Though I am a bit concerned about the low primary inductance
and high currents through the gap. RWStephens mentioned the idea
of the low L primary beating the daylights out of the cap(s). (And yes,
Bill Wysock is a good friend...!) One thing I do want to try is to
go with a slanted primary which will allow me about 8 - 10 turns
in the same footprint (swap the primaries on the coil) and run a
higher inductance secondary to see what happens. Maybe I can go from
6 feet to 8...??? Hmmmm. I needed a good summer project anyway!

- Brent

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