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Re: Tesla history project

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>


Tesla used a toroid to control the electric field as it exited his barn-like
structure at Col. Springs in 1899.  This toroid is clearly visible in the
photographs.

Dr. Resonance
>
> In his patents, he shows a Wardencliff type tower with a large toroid
> instead of a mushroom.
>
> David E Weiss
>
> >Original poster: <dgoodfellow@xxxxxxxxxxxxxx>
> >
> >I don't think I have ever seen a picture of one of Tesla's own coils with
> >a toroid on the top of it. I do remember something like a toroid in a
> >photo from Colorado Springs, but the only really large topload that I
have
> >seen (in what books I have) is the Wardenclyffe tower. Could you please
> >indicate where to look for  toroids use by Tesla?
> >
> >Thanks, Dave Goodfellow
> >
> >
> >----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> >To: <tesla@xxxxxxxxxx>
> >Sent: Wednesday, April 13, 2005 7:14 PM
> >Subject: Re: Tesla history project
> >
> >
> >>Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>
> >>
> >>
> >>The first large coil in the USA was built by George Kauffman in 1903 for
the
> >>Carnigie Institute (college).  It ran at 10 kVA with rotary spark gap
and
> >>plate glass capacitors.  It is still at the Buhl Museum/Planetarium in
> >>Pittsburg, PA.  Kauffman's father worked in New York digging ditches
with N.
> >>Tesla when Tesla was going through some hard times.
> >>
> >>In 1930 a coil was erected at the Griffith Observatory in Los Angeles.
> >>
> >>In the mid-1940's a German group was one of the first (after Tesla) to
use a
> >>large toroid atop the secondary coil for electrostatic field control.
This
> >>also forces the coil to run efficiently at a single sec freq and not
develop
> >>standing wave interference from multiple frequencies.
> >>
> >>Dr. Resonance
> >>
> >>
> >> >
> >> > I am doing a project in history on the history of Tesla coiling. I >
would
> >>be
> >> > gratefull to anyone who sends me, personally, information on the >
history
> >>if
> >> > Tesla coils since 1900 to the present.
> >> > Thanks.
> >> >                                                             Steven >
>
> >> Steele
> >> >
> >> >
> >> >
> >>
> >
> >
> >
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