Re: Microwave Oven Transformers

To: tesla-at-pupman-dot-com
Subject: Re: Microwave Oven Transformers
From: FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Mon, 15 May 2000 17:18:49 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 5/15/00 11:47:01 AM Pacific Daylight Time, 
tesla-at-pupman-dot-com writes:

> Original Poster: "R.L. Hilbun" <SEIOKC-at-swbell-dot-net> 
>  
>  Has anyone successfully used MOTs?
>  
>  They can't be more dangerous than a pole pig!
>  
>  At 1500 volts each, do you put 8 or ten in series?
>  
>  What about using two or four and a voltage doubler(s)?
>  
>  How do you handle the one side of the HV that is usually connected to the
>  core?
>  
>  R.L. Hilbun  (RL)
>  

RL,

In one test, I used 4 MOT's in series, with the center point grounded.
the two outer cores were hot (dangerous)..   MOT's have poor insulation,
so there was some corona sparkling between primary and core.  In 
any case, I got 62" sparks using a rotary gap and 4 to 6kVA depending
on whether or not I used extra external ballasting or not.  You cannot
series more than 4 MOT's safely.  I left the cores connected to one
side of the secodnary.  You can use the voltage doubler approach,
and a number of folks on this list have done that.

Cheers,
John Freau