Re: Saturable Reactors (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Fri, 23 Dec 2005 19:34:42 -0000
From: J. B. Weazle McCreath <weazle@xxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Saturable Reactors (fwd)


----- Original Message -----
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: "hvlist" <hvlist@xxxxxxxxxx>
Sent: Friday, December 23, 2005 4:18 PM
Subject: Saturable Reactors (fwd)
>
> ---------- Forwarded message ----------
> Date: Mon, 19 Dec 2005 12:22:46 -0600
> From: Carl Litton <Carl_Litton@xxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Saturable Reactors
>
> Does anyone (Doc, Peter, Jim, etc.) on this list have any experience
> building saturable reactors for ballasting purposes?
>
> Thank you,  Carl Litton
> Memphis HV Group
>

Hi Carl,

I made up a saturable reactor based on a LARGE microwave oven transformer
with the high voltage and filament windings removed and the primary
remaining.
I used the primary as the "control winding" by applying a variable D.C. to
it from
a small transformer/rectifier (about 1 Amp) controlled by a variac.  I used
a 6.3
volt transformer I had laying around.

Two additional windings where wound upon the outer legs of the core, 60
turns
on each one, and connected together in series aiding.  These windings are
put in series with one of the supply lines to the load.  With this
arrangement I can vary
the voltage applied to the load from about 50% upwards to around 95% of the
full source voltage, which in my case served the job.

Experimenting with different turns on the "load" windings might yield
different
results that could be tailored to your needs.

73, J.B. Weazle McCreath, VE3EAR - VE3WZL