Re: plans (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 22 Sep 2007 03:00:10 +0000
From: David Rieben <drieben@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Cc: drieben@xxxxxxxxxxx
Subject: Re: plans (fwd)

Hi Dr Res, all,

Well, I do have a dual MOT driven coil, but I don't think it qualifies
as an "SISG" coil, if I correctly understand the use if that terminology. It 
uses an 833A transmitter triode tube as the "switch", so I believe this coil 
would be classified as a "vacuum tube" Tesla coil (VTTC). It is stacatto 
controlled too, so as to allow higher power levels to be pushed through 
at lower duty cycles and allow for longer sword-like sparks w/out popping 
the breaker and/or burning up the the tube plate! It is based on Cameron 
Prince's modification of Steve Ward's original 833A vacuum tube coil 
plans for 22" to 24" sparks. Since I followed Cameron's modification 
with the 2 seriesed MOTs which are then fed to a level shifter voltage 
doubler circuit, this allows up to around 7 kV peak voltage on the
tube plate, so I can get up to 36" or 38" sword-like pulsed, spark dis-
charges with mine. Although this consdierably exceeds the tube's plate 
voltage rating, I've never had any problems running it in the stacatto mode
and the plate only glows a dull orange.


David Rieben

-------------- Original message -------------- 
From: "Tesla list" <tesla@xxxxxxxxxx> 

> 
> ---------- Forwarded message ---------- 
> Date: Fri, 21 Sep 2007 16:21:46 -0500 
> From: resonance 
> To: Tesla list 
> Subject: Re: plans (fwd) 
> 
> 
> Yes, I have the info --- contact me off-list. 8.5 foot spark with two MOTs. 
> 
> Dave Rieben also has a very nice dual MOT SISG type coil with a 4 ft long 
> spark. 
> 
> With the price of copper you can forget "cheap". 
> 
> 
> Dr. Resonance 
> 
> Resonance Research Corp. 
> www.resonanceresearch.com 
> 
> 
> ----- Original Message ----- 
> From: "Tesla list" 
> To: 
> Sent: Friday, September 21, 2007 2:09 PM 
> Subject: plans (fwd) 
> 
> 
> > 
> > ---------- Forwarded message ---------- 
> > Date: Fri, 21 Sep 2007 10:14:25 -0700 
> > From: Clive Hansen 
> > To: Tesla list 
> > Subject: plans 
> > 
> > Does anyone know of good plans for a medium sized coil using two mots and 
> > cheap parts? 
> > 
> > 
> > 
> 
> 
> 
>