Re: Problems with current limiting system

To: tesla-at-pupman-dot-com
Subject: Re: Problems with current limiting system
From: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Sun, 25 Jul 1999 08:24:32 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

to: Mike

There was not enough iron for effective control.   For effective current
limiting with a pole pig you really need a C-core or E-I core configuration
with a small gap --- approx 120 mils per side.

Regards,

Dr.Resonance


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Saturday, July 24, 1999 7:19 PM
Subject: Problems with current limiting system


>Original Poster: "Coiler" <mycroft-at-access1-dot-net>
>
>Well, I just got a nasty surprise, and am looking for input from
>someone that is more familiar with this than I.
>I wound an iron core coil, hoping to use it as a limiter for my pig.
>about 10lbs of iron wire form a straight core. I wound about 400 turns
>of 10AWG wire on this. Measuring current with my 110V variac
>I found that I got 10A at 130V. So I figured I would get around 25A
>at 240. Boy was I wrong.
>Wired in series with my pig, shorted pig output. Meter shows 83A being
drawn
>and considering how the wires were jumping, I'd belive it.
>
>Is it possible I saturated the iron, even though it is a straight rod?
>
>*HELP*
>Thanks!
>Michael Baumann
>Coiler, Homebrewer, Nerd. mycroft-at-access1-dot-net
>
>
>