Re: dual MOT Tesla coil design is complete (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "resonance" <resonance@xxxxxxxxxxxx>


with IGBTs the rules are changing.  Their much higher switching 
efficiency and lower losses of heat and light lead to 450 Watts / ft 
of spark performance as opposed to 1 kW / ft required in classic coils.


Dr. Resonance
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, November 01, 2006 5:59 PM
Subject: Re: dual MOT Tesla coil design is complete (fwd)


> Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> Hi Terry,
>
> This would be great, but what ever happened to the sqrt(power) relationship???
>
> Gerry R
>
> > Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
> >
> > At 10:48 PM 10/30/2006, you wrote:
> > > Hi DC,
> > >
> > > From what you say below, it sounds like you have the design but 
> > > have not built it yet??  If this is true, where did the 7.5 foot 
> > > arcs come from??
> > >
> > > Gerry R.
> >
> > My SISG does about 28 inch arcs at 4800 SISG firing volts with a 
> > 165nF primary cap.  It would do about 42 inches if I let it loose 
> > with one MOT...  If DC can get 4800 Watts out of two MOTs, then the 
> > spark length directly doubles to 84 inches or 7 feet.  But he is 
> > using a bit larger primary cap too...  So 7.54 feet is about 
> > right.  I am a little concerned about getting 4800 Watts out of 
> > just two MOTs.  But DC might know tricks I have never dreamed of ;-))
> >
> > I have not thought much about the dual MOT SISG system...  But 
> > others are now thinking far faster than me on SISG things ;-)))))
> >
> > Cheers,
> >
> >         Terry