Re: Pole transformer ballast

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

Original poster: "Metlicka Marc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net>

adam,
oddly enough, a friend of mine just dropped of a union carbide "LINDY"
welder that has the adjustable core for limiting.
it is a 0-255 amp model that has high and low for currents and is quite
compact (16" x 20" x 32"). most of it is cabinet so i think i will clean
it up and give it a try in piggy control. the secondary "LOOKS" like
brass strip conductor, but it may be aluminum?
does anyone know weather i should use the high or the low taps?
also, how does the face plate amp rating correspond to piggy output?
thanks and i hope another manufacturer for your list helps you.
i will post a schematic after i "look" a little deeper into it.
marc m.

> > I am thinking of using an arc welder as a pole pig
> > ballast. The cheaper welders
> > (e.g. Lincoln AC-225)  that I have seen appear to
> > use a multi-tapped secondary
> > with resistive current limiting on the primary. If
> > so, then I question whether
> > using one of these would be much better than simple
> > resistive current limiting.
> > The more expensive welders appear to use a crank
> > mechanism to move the primary
> > and secondary of the transformer with repsect to
> > each other. This seems much
> > more desirable as no resistive current limiting is
> > involved. Does anyone know
> > for certain which welders use the movable
> > transformer core method? I think that
> > Miller and Century do this but I am not sure. This
> > entire ballasting issue is
> > proving to be my most perplexing problem.
> >
> >
> >
> 
> =====
> Adam Minchey
> yurtle_t-at-yahoo-dot-com
> www.geocities-dot-com/yurtle_t/index.htm
> 
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