Re: capductor or incapacitator or something (OLTC idea...)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>
> 
> Tesla list wrote:
> >
> > Original poster: "Wells Campbell by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <wellscampbell-at-onebox-dot-com>
> >
> > well, I got to thinking, what if you could make a cap that had about
> > the inducance of a primary, wrapped around a tube which would go around
> > the secondary and serve as both the primary and cap in one unit-I think
> > I called it a capductor or incapacitator or something, and got some copper
> > foil and twisted one up.
> 
> I remember seing this device described and analyzed in a paper years
> ago when I was researching old IEEE journals. Probably something from
> the 1940's or 1950's. I can't locate the source now, however.
> A curious device. It's a rolled plate capacitor where the parasitic
> inductance is put to use.
> 
> Antonio Carlos M. de Queiroz

	There was a description of something similar in Science magazine a few
months back; I've forgotten the details as the subject matter seemed
trivial for any of my needs. What I think I remember was that they used
the thing in a device to let an NMR probe get closer to the specimen.
Seems to me the title included something about "negative permeability"
or something like that.

Ed