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Re: Cap-driven x-former?
Original poster: Jim Lux <jimlux-at-earthlink-dot-net>
This is basically the same transformer. (GE part 9T68Y5021G10 )
C&H Surplus has them as TR9407 for $50.
It works just fine without the capacitor (except for the power factor being
There are several flavors of it that I've seen: a 220V version, a 50Hz
Yours is a 5022G10, which is probably a somewhat different configuration,
but fundamentally the same.
FWIW, I don't know that GE ever made ferro-resonant transformers.
I haven't been able to find out how it was used in the copiers. Originally,
I thought it might be used to run an arc lamp, but the voltage is awful
high. So, my latest guess is that it was used to charge a reservoir cap to
fire some very bright flash tubes. Kodak had some very fast photocopiers
back in the late 70's early 80s that used a fairly large array of flash
tubes, and looking over old EG&G literature, I think I found the tubes that
At 06:28 PM 6/7/2004 -0600, you wrote:
>Original poster: "Jim Mitchell" <Electrontube-at-sbcglobal-dot-net>
>Well I'd think it was ferro-resonant, because he says the output is horrible
>without the capacitor. Google could tell more then I could, as I don't
>know much about the ferro-resonant circuit.
> > > > More specs: Seller advertised it as out of a copier power
> > > Inked
> > > > on the side of the unit is "General Electric part # 9T68Y5022G10".
> > > for
> > > > Eastman Kodak (with an Eastman Kodak part #).
> > > > Cap is a 10uF 1000VDC oil-filled type.
> > > >