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Re: Haller / Cunningham "The Tesla High Frequency Coil" (fwd)

---------- Forwarded message ----------
Date: Thu, 05 Jul 2007 21:47:01 +0000
From: Jeff Behary <jeff_behary@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: Haller / Cunningham "The Tesla High Frequency Coil" (fwd)

Hi Bart,

I agree totally about the friction brass in the back...but that was 
Cunningham/Haller's idea, not mine!  Isn't is much nicer to just have two 
electrodes, or a space as you mentioned.  That sort of arrangement makes a 
horrible sound otherwise.

About the all metal disk, they are interesting too if you elimiate all of 
the discharge points and simply have the rotating gap as just a way of 
bringing a new surface to the gap continuously.  In the Thomas Stanley 
Curtis book 'High Frequency Apparatus' there is a neat gap of 
counter-rotating disks for a high frequency horticulture Tesla Coil that was 
meant to run for hours on end.  Its pretty neat, and a very interesting 
topic too.  Electrotherapy for plants...

Incidentally, Thomas Stanley Curtis had two sons.  One of them, also named 
Thomas Curtis, has contacted the museum about their father.  He did vast 
research into refractory materials after his experiments with Tesla Coils, 
and formed dozens of patents for these...its interesting how all of these 
men led fascinating lives that all started with Tesla Coils!

Jeff Behary, c/o
The Turn Of The Century Electrotherapy Museum