Re: 813 tube tc coil

• To: tesla-at-pupman-dot-com
• Subject: Re: 813 tube tc coil
• From: David Trimmell <davidt-at-pond-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Tue, 16 Mar 1999 18:05:10 -0700
• Approved: twf-at-verinet-dot-com

At 10:41 AM 3/15/1999 , you wrote:

>
>    David, the length of the spark , you mentioned in the post, is measured
>with             somekind of toroid or only the electrode at the top of the
>magnifier?
>Because with this last type of measurement I obtain 5" on 3X807 tube TC
working
>at only 700Vac plate voltage with a tetrode connection.
>
>P.S I've seen your site it's very beautiful.
>If you have not yet seen the mine you can look at
>http://www.pupman-dot-com/current/vladi/vladmap.htm
>Happy Sparking
>Vladi.
>

Hello, 

Yes I did use a top load, about 3.5 inch tall and 2.5 inch diameter with a
sharpened nail for the discharge point. Sounds like pretty good performance
for such a low-voltage tube, especially at only 30 watts plate dissipation.
Perhaps you could detail it for everyone. I assume that two 803's could do
much better than 7 inch discharge in a well designed coil.

Regards,

David Trimmell

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