Re: Variable current controls & chokes


  I have   taken a copy of your controller design as a guide for my own, I am
interested in the ratings for your variacs, (powerstats). I have two, one air
cooled rated at 28Amp 240 volt, and another behemoth :-)) oil cooled rated at
40 amp 240 Volt. If you did not cut the core on your current control
powerstat, what was it's rated current capacity?



p.s. - very nice web site :-)

Tesla List wrote:

> Original Poster: "Basura, Brian" <brian.basura-at-unistudios-dot-com>
> Mike,
> Here's what I did:
> http://fp2.hughes-dot-net/brianb/images/Tesla/Newcontroller/newcontroller.html
> Bill Wysock helped with the current/voltage control design and no I didn't
> cut any of the cores.
> Brian D. Basura
> -----Original Message-----
> From: Tesla List [mailto:tesla-at-pupman-dot-com]
> Sent: Friday, June 25, 1999 10:50 AM
> To: tesla-at-pupman-dot-com
> Subject: Variable current controls & chokes
> Original Poster: "Michael J. Veach" <veachm-at-sunyit.edu>
> I am working on a new driver and was wondering about using large
> variacs as variable current chokes. I want to be able to adjust my
> current between a minimum value and a maxinum set value. I was thinking
> of a large variac in series with a choke made from another variac, and
> these in series with the transformer. Since I have never made a current
> limiter before (I usually use neons), I'd like to get the advice and
> imput of the list members, and maybe some help with the design for this
> current limiter. Any hints and tips, or instructions on how to modify
> and rewind the variacs, would be a big help. I know they need to have a
> slot cut into the core, but should I make it a certain size? I am
> planning on using a 14.4 kV pig in case you need to know.
> Thanks in advance,
> Mike Veach.
> P.S. I am also interested in any info you may have on Cockraft-Walton
> multipliers. You can reply to this off-list at my email addy, which is
> veachm-at-sunyit.edu