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Re: Control transformer
Original poster: "John F" <fuseboxr-at-hotmail-dot-com>
When i worked in the neon shop the control was just a variable inductor.
Pull the core out for more power push in for less.
And it did buzz like mad.
>From: "Tesla list"
>To: tesla-at-pupman-dot-com
>Subject: Re: Control transformer
>Date: Wed, 10 Mar 2004 19:07:26 -0700
>
>Original poster: "Steve Zeitler"
>
>
>----- Original Message -----
>From: "Tesla list"
>To:
>Sent: Wednesday, March 10, 2004 7:08 PM
>Subject: Control transformer
>
>
> > Original poster: "GEORGE STEIN"
> >
> > Good evening folks,
> > I am looking for a schematic, wiring diagram or specs. on the
>control
> > transformer that is used by the noen folks to control the current
>in their
> > bombarders/pigs. It is, I think, a DC control voltage applied to
>windings
> > on a transformer that controls the amount of current allowed to
>be drawn
> > through it. ie ballasting...
> >
> > Thanx
> > George Stein
> >
> > _
> >
> >This sounds like a thing I saw once called a magnetic amplifier.
>Consider a
>typical transformer core with 3 "legs".
>The windings are wound on the center leg. The 2 outer legs complete
>the
>magnetic path. In the magnetic amp, a "primary" winding was wound on
>each
>outer leg. Another winding of many fine windings was put on the
>center leg.
>AC was put on 1 of the primaries. The magnetic field ran thru the
>center leg
>and little of it reached the other primary on the other outer leg
>so...
>little output..
>When a DC current was run thru the winding on the center leg, a
>common
>magnetic field was created thru all 3 legs. The 1st primary driven
>by AC
>input modulated the common field and the modulated field was picked
>up by
>the other primary resulting in some output. The output AC could then
>be
>controlled by a much smaller DC current on the center leg. I saw one
>of
>these things once, it worked fine, with 0-100% output control.
>
>Steve Z
>
>