Re: Van der Graaff generator details. (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 18 Oct 2003 21:55:21 -0700
From: W.R. Langston <blangsto@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Van der Graaff generator details. (fwd)

Hello, Dr. Resonance, would it be possible for you to post a sketch of
this machine. I cannot quite visualize the positioning of the belt.

[Remember - images cannot be posted to the HV list.  You should either ask
for images off-list, or ask for a link to an image. SRR]

Thanks,
Bill Langston

High Voltage list wrote:

>Original poster: Steven Roys <sroys@xxxxxxxx>
>
>
>
>---------- Forwarded message ----------
>Date: Fri, 17 Oct 2003 18:00:11 -0600
>From: Dr. Resonance <resonance@xxxxxxxxxx>
>To: High Voltage list <hvlist@xxxxxxxxxx>
>Subject: Re: Van der Graaff generator details. (fwd)
>
>
>Finn:
>
>There is another way the works quite well for large termination design.
>
>We made a 2 MEV VDGRF by turning a cylinder 90 degrees on its side and then
>using two large hemispheres (sphere actually cut in half) for end caps.  The
>cylinder can be either metal or even rolled up medium mesh wire.
>
>Supports are 3 two inch dia. fiberglass (haysite) rods which go through
>small holes and suspend the sphere in space.  The belt hole is a neatly cut
>slot with the surfaces slightly curved inward.  Our sphere was elevated
>approx 14 ft. above ground.
>
>Our cylinder/sphere was 4 ft. dia. x 7 ft. long.  This allowed us to run a
>36 inch wide belt into the slot and we got out 550 uA at 2 x 10^6 Volts.
>Beautiful 6-7 ft. long sparks and very hot.
>
>This design could be either upscaled or downscaled to suit your needs.
>
>Dr. Resonance
>
>Resonance Research Corporation
>E11870 Shadylane Rd.
>Baraboo   WI   53913
>
>
>><J.G. Trump gave an excellent example of the correct design of a Van de
>><Graaff high voltage terminal. Instead of a sphere, the terminal is a
>><flat topped
>><toroid.( 500 kV @ 200 microamp. is generated by this 1938 design ).
>><www.lateralscience.co.uk/VDG/trump.html
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