Re: copier transformers

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

Original poster: "J Whyte by way of Terry Fritz <twftesla-at-qwest-dot-net>" <xoom321-at-hotmail-dot-com>




>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: copier transformers
>Date: Thu, 24 Jan 2002 07:57:03 -0700
>
>Original poster: "Marry Krutsch by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><u236-at-earthlink-dot-net>
>
>	Hi all.
>
>How did you get 15 feet out of those things???  How many were you
>using?  I have 2 of them, and only get 6 ft.
>
>
> > ----------------------------
> > Not true at all! ALL 30lbs photocopier XMFR's will run around
> > 4.5 to 5 kVAC at 350 mA, some run as high as 450 mA. They operate the 
>same
> > as a MOT.
> > THEY ARE LETHAL! I have used them for TC service and gotten 15' arcs!
----------------------------------------------------------------------
their are 2 main types of copier XMFR's, those with 5 kV/350mA and ones 
running 4.5 kV/ 450mA....the odd one has 550 mA at 6.5 kV (these are rare).
I don't actually own any copier XMFR's but I used some over at my friends 
house. We seriesed 3 (4.5kV/450 mA XMFR's) together for 14 kV and the sparks 
were 15' peak. We were also using 2 expenive 120VAC 30A VARIAC's. We were 
inputing 150 volts into the transformers. It worked great. But recently I 
have been experimenting with large sized MOT's in series, and so far I am 
getting 40% MORE power at 1/4 the price....MOT's can survive double the 
input voltage if the core width is big enough and the spacing between the 
outer portion of the secondary and the core is .25 to .3". Smaller MOT's 
will burn up if you start introducing X2 volting. Old Kenmore (SEARS) 
microwave MOT's have extra large spaces between secondary, and core and core 
size is fairly large. So far my sears MOT's are holding up just fine. The 
actual line input voltage alternates between 230V to 240V. I have my XMFR's 
under oil.



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