Re: Primary construction

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi,

In general, you should tap you primary at about 58% of what it was at 
2nF.  Search around that area for the new tune point.

Cheers,

         Terry


At 07:58 PM 9/15/2003 -0700, you wrote:
>My two new TDK caps arrived today, meaning that I now have 6nF/40Kv of tank
>capacitor. However, this obviously throws the old setup completely out of
>whack. I've been trying to get resonance again, but failed miserably.
>
>So, here are the specs:
>Secondary: .75 inch dia, 10.5 inch wound, 1000 turns, 196 feet of 32 gauge
>wire
>Primary is helical, 5 inches in diameter, with 3.5 inches vertical to work
>with
>Tank caps are 3 X 40Kv/2nF TDK caps, X-fmr is 5000/20 NST.
>
>I've tried using JavaTC at classictesla-dot-com, but it's not working. After
>giving up in it, I tried using 2, 3, 4, 6, 8, and 13 turns, none of them that
>much better than the other. I've got more 22 gauge wire than you want to know
>about and about 10 feet of .375 inch copper pipe to work with. HELP ME,
>PLEASE!
>
>PS, JavaTC says the coil resonates at 750 Khz. Is it on crack?