Re: MOT DC TC

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

Thanks for the vote of confidence. However, I can't
take credit for the dual MOT power supply design, as
I, uh, "borrowed" it from Finnish engineer & coiler
Marco Denicolai. My only contribution was to adapt it
to US wallplug current, and to try it unballasted. The
power output is pretty amazing for just a couple of
MOTs--darn near "pole pig" power. If you plan to
emulate it, I suggest you use beefier output
resistors, as my 55W ceramic wirewounds were barely
adequate. I suggest 100W resistors from Mouser
Electronics. Better yet, check out the even more
efficient choke output design on Richie Burnett's
site:

http://www.richieburnett.co.uk/dcreschg.html

I think two MOTs feeding a full-wave doubler/filter,
with iron core choke output (two extra MOTs should do)
would make an even better PSU. See:

http://hot-streamer-dot-com/greg/schematic.gif

to get an idea of what I'm talking about.

Merry Christmas

Greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "J Whyte by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <xoom321-at-hotmail-dot-com>
> 
> If your interested in building a MOT DC supply my
> advice is to pay close 
> attention to Gregs Garage site: His MOT DC supply
> works 100%, and is very 
> powerful (and is cheap and fairly easy to make)!! I
> have tried it myself and 
> I get around
> 14-15KVDC ....my smaller coil, which has been sold
> to a local University 
> used 2 "120VAC rated" MOT's (1.1 KW each in series
> on a 240 V input) I was 
> able to get around 7 KV (AC) for the pair. Then I
> used a voltage multipling 
> setup to get 14-15 KVDC pulsed at 60Hz. I was able
> to draw 80" sparks off 
> the secondary coil with a 85 nF cap!
> 
> : here is a detailed schematic of the MOT DC supply:
> <http://hot-streamer-dot-com/greg/motpic.htm>
> 
> 
> ...happy holidays!
> 
> 
> 


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