Re: Alternative supply for tesla coils

To: tesla-at-pupman-dot-com
Subject: Re: Alternative supply for tesla coils
From: Esondrmn-at-aol-dot-com (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Thu, 01 Apr 1999 18:29:49 -0700
Approved: twf-at-verinet-dot-com

In a message dated 3/31/99 2:47:02 AM Pacific Standard Time, tesla-at-pupman-dot-com
writes:

> > Isn't the insulation on MOTs the same insulation on the secondaries 
>  of 
>  >> NST's?  I it'll last on 15 KV, why not 8?
>  >
>  >Nope... the NST is potted, the MOT isn't. It isn't the winding to 
>  winding
>  >insulation you are worried about here, it is the winding to core 
>  breakdown.
>  >Plunging the MOT in a bucket of oil would probably solve the insulation
>  >problem.
>  >
>  Are you sure this is the case?  I've read on peoples sites that they've 
>  unpotted nsts and ran them dry with no ill effects(Chrs Hills's Tesla 
>  Coil Page http://www.hills2.u-net-dot-com/tesla/neon.htm). Never done it 
>  myself.  Can any one whose killed a MOT or two describe the mode of 
>  failure?
>  
>  Chris, via the inter-thingy
>  
>  Get Your Private, Free Email at http://www.hotmail-dot-com
>  
For what it is worth, I unpotted a 12 kv 120 ma transformer, cleaned it all up
and built a new acrylic box for it.  Ran it dry, no oil, after about 1.5
minutes, the secondary shorted somewhere and lots of smoke was released.
Bummer.

Ed Sonderman