"The Mighty Corona Cone"

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: "The Mighty Corona Cone"
From: Tesla List <tesla-at-stic-dot-net>
Date: Wed, 11 Feb 1998 21:10:26 -0600
Approved: tesla-at-stic-dot-net


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From:  Jim Fosse [SMTP:jim.fosse-at-bjt-dot-net]
Sent:  Wednesday, February 11, 1998 11:50 AM
To:  Tesla List
Subject:  Re: "The Mighty Corona Cone"


>From:  SBJohnston-at-aol-dot-com [SMTP:SBJohnston-at-aol-dot-com]
>Sent:  Tuesday, February 10, 1998 3:41 PM
>To:  tesla-at-pupman-dot-com
>Subject:  "The Mighty Corona Cone"
>
>
>Hi list:
>
>I added a 17" dia toroid made of 4" aluminum duct to the top of my 16" dia
> 48" long secondary, yet the top few turns are still streaming with corona.
> In fact, the effect may be stronger with the toroid than without.  It is a
>solid, sharply-defined, glowing vertical cone streaming up and away from the
>coil and topload.
>

Steve,

	Your toroid is way way to small! On my 8" diameter coil I use
15" to 40" toroids. I would suggest that you start by building a
toroid that is 36" in diameter. The center portion of the toroid does
NOT have to be solid. I've used both aluminum bar stock to mount the
heater duct and a wood disk with a strip of aluminum tape to mount the
duct. Both work as well as my toroid that has a solid 24" steel disk
as it's center.


	cheers,

	jim