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Re: Cap-driven x-former?
Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
It's not ferro-resonant.. just an ordinary transformer with a lot of leakage
reactance to limit the current in a gas-discharge tube application.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
Sent: Sunday, June 06, 2004 7:21 PM
Subject: Re: Cap-driven x-former?
> Original poster: "Jim Mitchell" <Electrontube-at-sbcglobal-dot-net>
> I believe that capacitor is part of the Ferro-Resonant circuit commonly
> in iron cored transformers. Google can tell you more then I can.
> Regards - Jim Mitchell
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Sunday, June 06, 2004 7:49 PM
> Subject: Cap-driven x-former?
> > Original poster: FIFTYGUY-at-aol-dot-com
> > Folks-
> > I bought a HV transformer many years ago (from Mouser, probably)
> > a unique feature that I have never figured out.
> > It's a 5KV, 300mA secondary, 110V primary. Single phase, no
> > connected to ground at all. From my recent TC research, I learned that
> > X-former also has magnetic shunts (which have since resisted all my
> > attempts to
> > remove them without destroying the unit). Makes a pretty impressive
> > Ladder
> > driver with the high, but self-limited current.
> > What has puzzled me is why it has a third winding that requires
> > of a cap to make the transformer run. The third winding is center
> > it's inside (wound closer to the core) of the secondary. The center tap
> > used, but the seller's ad mentioned the cap requirement, and they
> > cap and a connection drawing.
> > With the cap, it's works great. Without, the HV leads barely put
> > spark. How does this thing work, and can this "extra winding with cap"
> > principle be applied to other existing HV transformers as well?
> > More specs: Seller advertised it as out of a copier power supply.
> > on the side of the unit is "General Electric part # 9T68Y5022G10". Made
> > Eastman Kodak (with an Eastman Kodak part #).
> > Cap is a 10uF 1000VDC oil-filled type.
> > -Phil LaBudde