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Oddball Oudin Coil
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From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Friday, March 13, 1998 8:29 PM
To: Tesla List
Subject: Re: Oddball Oudin Coil
to: Greg
The article was published in "The Scientific American Book of Projects for
the Amateur Scientist", by C.L. Stong, in 1969. The article was on a
homebrew x-ray system. His secondary coil was oil-immersed. You may still
be able to locate this book through a booksearch vendor on the internet. I
believe the author lived in New Jersey if memory recalls correctly. This
book is still available in many large public libraries and most small
libraries can pick it up thru their interloan services so you could get a
copy and read the entire article -- free from your local library!
DR.RESONANCE-at-next-wave-dot-net
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: Oddball Oudin Coil
> Date: Friday, March 13, 1998 9:04 AM
>
>
> ----------
> From: Gregory R. Hunter [SMTP:ghunter-at-mail.enterprise-dot-net]
> Sent: Thursday, March 12, 1998 3:21 PM
> To: Tesla List
> Subject: Oddball Oudin Coil
>
> Coiler Types,
>
> Many years ago, I read an article in an old hardcover book published
> by Scientific American Magazine. The author described building a
> kicker-type coil, which he called an Oudin coil, using a Model-T
> ignition coil. He removed the secondary coil, but left it intact.
> He rewound the iron core with lots of magnet wire, and retained the
> interrupter assembly. This was the "kicker" coil. Next, he
> re-potted the old secondary winding inside a plastic sleeve and wound
> the outside of the sleeve with 5 turns of copper tube. I can't
> remember what he used for a capacitor. With the kicker coil
> interrupter buzzing, the repotted secondary (now air-cored) put out
> about 75KV. Very interesting gadget. He used it to drive a homebrew
> X-Ray tube. I wonder why the multi-layer secondary coil didn't flash
> over to itself? If this physics hacker is still alive, he should
> join this list--he'd fit right in.
>
> Recalling the old article raises a question. How does a compact,
> multi-layer winding compare with a traditional single-layer resonator
> in terms of inductance, Q, resonant voltage rise, etc? If not for
> the insulation problem, could a physically compact, multi-layer choke
> perform as well as a longer, single-layer resonator? Would such a
> choke exhibit voltage rise due to impedance ratio, like a Tesla coil,
> or would voltage rise be due to turns ratio, like a regular
> transformer?
>
> Just wondering.
>
> Cheers,
>
> Greg
>
> Beck Row, UK
>