RE: plans (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sat, 22 Sep 2007 12:57:52 +0000
From: David Rieben <drieben@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Cc: drieben@xxxxxxxxxxx
Subject: RE: plans (fwd)

Hi Mark, Dr. Res,

Ah yes, that makes sense now. I thought at first that Dr. R was 
mistakenly referring to my VTTC as an SISG coil. My VTTC 
can't quite hit 4 ft. sparks and my Green Monster coil exceeds
4 ft.sparks by a factor of >3! 

Mark, if we were a bit geographically closer to each other, I might
would take you up on making the Green Monster SISG ;^) Taking
the Green Monster to SISG would require a pretty substantial in-
vestment of time and funds on my part and I am really pretty aca-
demically challenged in a good general knowledge of electronic 
circuits. I don't really know anyone locally who could "hold my
hand" to take on such a project. The only reason that my VTTC
works as well as it does is because I closely followed the plans
of Steve Ward and Cameron Prince's modification of Ward's
original plans for an 833 VTTC project. Once I got it to working,
then I was able to make a few MINOR modifications of my own 
to further improve the output ;^) Also, until I get a larger enclosed
shop built that I can actually run the Green Monster inside of, I am
really limited on how much time that I can actually fire and tune her
up for "upgrades" since I currently have to fire her off in my drive-
way in the glaring presence of suburbanite neighbors. I haven't 
gotten a visit from the local police about my coil yet and I would
like to keep it that way ;^0 I suppose I could try out SISG on a
small scale first to "get the hang of it" before trying it on a "Green
Monster" scale ;^))

David Rieben

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

> 
> ---------- Forwarded message ---------- 
> Date: Fri, 21 Sep 2007 22:30:15 -0500 
> From: Mark R Dunn 
> To: 'Tesla list' 
> Subject: RE: plans (fwd) 
> 
> 
> Hey Dr. R: 
> 
> The Green Monster still had an RSG at the Teslathon. 
> We are trying to convince Dave R. to dump the RSG and switch to SISG, but we 
> haven't succeeded yet. Hope to soon. 
> 
> I think you were referring to my Dual MOT SISG coil. 
> When you turn 50 the memory goes. I have the same problem! 
> Great job on the Teslathon. 
> Amazing how many people came this year. 
> Thanks. 
> 
> Mark Dunn 
> 
>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
 
> 
> >---------- 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? 
> > 
> > 
> > 
> 
> 
> 
> 
> 
>