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Re: Desktop Coil ground? (fwd)
---------- Forwarded message ----------
Date: Mon, 19 Jan 1998 17:06:16 -0700
From: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Desktop Coil ground? (fwd)
to: Mike
With this size coil you might consider using an oil burner ignition xmfr
(OBIT). Most are rated 10 kV at 23 ma and will usually charge a .005 MFD
cap reasonably well. I made a small unit this size and took it to Ed
Wingate's Teslathon this year. It produced 5-6 inch sparks. I used a
simple 2 gap design (2 small gaps in series) and a commercial .005 MFD cap
with a 3 turn primary coil. I started with 16 turns and tapped until it
worked best with the cap and sec. load. The caps are very small (3/4 inch
x 2 inch x 1/4 inch) which allowed me to use a base only 7 1/2 inch wide.
Used delrin spacers 4 3/4 inch high to separate the sub-base pieces which
were 1/4 inch phenolic type LE. If you need any caps I have them in stock
005 MFD 9 kV (will work on 10 kV) for $25/unit.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Desktop Coil ground? (fwd)
> Date: Monday, January 19, 1998 9:34 AM
>
>
>
> ---------- Forwarded message ----------
> Date: Mon, 19 Jan 1998 08:27:36 -0800 (PST)
> From: baumann-at-proton.llumc.edu
> To: tesla-at-pupman-dot-com
> Subject: Desktop Coil ground?
>
> I am in the process of designing/building a desktop coil for a friend
> that is a physics teacher. Can you think of a better way to get kids
> interested in science that arcs? :)
> Anyway: It is pretty obvious that said coil must be small,and that is
> not really a problem. What is a problem is how to ground the beast.
> The instructor is not allowed to do little things like pound 8ft rods
> into the ground outside the class.
> [Proposed coil would be: 1"x10" 28awg, with a 2-3" spherical topload`
> I will have to find ferrite toriods or sticks to build the protection
> circut. At this frequency, he will be able to use a small cap, and yet
> still get 5-6" arcs at least.
> --
> --
> Michael Baumann Optivus Technology Inc.|Loma Linda University Medical
Center
> San Bernardino, California. (909)799-8308 |Internet: baumann-at-llumc.edu
>