Re: Secondary Coil design

["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 11/15/01 1:04:29 PM Central Standard Time, tesla-at-pupman-dot-com
writes: 


>
> Hello List, 
>
> I have noticed a failure pattern in all of my secondary coils and am 
> searching for a solution. Each one has had a failure within the 
> bottom 25 turns (shorts between turns).



Thanks! 
Gregory 

Gregory, 

I ran into this same problem with my "Medusa" Tesla system, 
which is driven by a properly ballasted 10 kVA pole pig, and the 
only way that I was able to correct the problem (after scraping 
away the burnt, carbonized cardboard - Sonotube form) was to re- 
duce the primary/ secondary coupling. I simply pulled off the da- 
magedwindings from the bottom and left the secondary's elevation 
the same, so this effectively reduced the coupling. 

Sparkin' in Memphis, 
David Rieben