Re: tube coils

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Tesla729-at-cs-dot-com>

In a message dated 10/10/01 9:14:08 PM Central Daylight Time, tesla-at-pupman-dot-com
writes: 



>
>    While the 100kvish transformers seem tempting, reports 
>    indicate that spark gaps need top be largely reinvented. 
>    Much careful work & time over 110 years have yielded 
>    good approaches for the 15/20 KV range.  For 100KV, the 
>    spark gap would need reinventing/reoptimizing. 
>
>    I suspect such a coil would be interesting, but a lot 
>    of cut and try.... 
>
>    best 
>    dwp 
>
>



Hi John, Dave, 

I've often wondered about the feasability of an x-ray tranny 
powered Tesla system. Not only would the spark gap have 
to be "reinvented", but the requirements of the primary cap 
would also be truly enormous. I have posession of a 140 kV, 
500 mA x-ray tranny that tips the scales at nearly 1000 lbs 
and the thought has crossed my mind that this would power 
one heckuva Tesla coil! However, trying to build a primary 
circuit that could hold off ~ 150 kV and then obtaining a 
high rep rate, low loss, pulse duty capacitor in the multi- 
nFD range that could digest 150 kVAC without going nuclear 
would prove to be very impractical and $$ expensive $$ for 
the average coiler hobbiest. Maybe some better funded group 
(i.e.-Geek Group) could pioneer into the development of a 
>100 kV primary voltage Tesla system? 

My $.02 worth, 
David Rieben 

PS -- When properly ballasted, x-ray trannies DO make practical 
power supplies for awesome Jacob's Ladders  :-)