Re: [TCML] Dual MOT SGTC

["DC Cox" <resonance@xxxxxxxxxxxx>]

What was your maximum measured spark output length, toroid to ground?

What was the current in the primary of the MOTs limited to (each MOT I
assume had separate ballast)?

Dr. Resonance




On Thu, Jun 26, 2008 at 11:28 PM, Liviu Vasiliu <teslina@xxxxxxxxx> wrote:

> 37.5 nF @ 16 kV MMC type, 3 strings, each string with 8 caps in serie (100
> nF @ 2kv)
>
> teslina
> >
> >
>
>
> --- On Thu, 6/26/08, DC Cox <resonance@xxxxxxxxxxxx> wrote:
>
> > From: DC Cox <resonance@xxxxxxxxxxxx>
> > Subject: Re: [TCML] Dual MOT SGTC
> > To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> > Date: Thursday, June 26, 2008, 5:42 AM
> > What size capacitor did you use with the two MOTs?
> >
> > Dr. Resonance
> >
> > On Wed, Jun 25, 2008 at 3:05 PM, Liviu Vasiliu
> > <teslina@xxxxxxxxx> wrote:
> >
> > > Hi list
> > >
> > > I built these days another dual MOT for a friend (he
> > needs it for a
> > > presentation or maibe to impress some other guys, who
> > knows). I dont have
> > > the time to set a web page, but I made a quick movie
> > presentation (sort
> > > of...) and some "action" movies.
> > >
> > > The power source is just two MOTs in serie (4-4.5 kV
> > output), inductive
> > > ballasted on the low voltage side. I still believe
> > that it is the cheapest
> > > solution for the eastern Europe where the NSTs are
> > still rare. They give
> > > enough power for a healthy streamer and if they are
> > well ballasted they can
> > > get some more voltage input (from a variac) without
> > saturation (just more
> > > voltage and lower current in the same power area). The
> > gap is not set very
> > > wide (to mantain the breakrate at resonable high
> > level), so the streamer is
> > > not the longest possible, but is still very good for a
> > presentation. I wound
> > > a bit longer secondary to prevent the strikes to the
> > strikerail, allowing
> > > the full lenght for the streamers. Because the low kV
> > input the primary cap
> > > cost is very low.
> > >
> > > The "presentation" movie:
> > >
> > > http://www.youtube.com/watch?v=scdu0BoxSaw
> > >
> > > 220 V from mains, multiple streamer output:
> > >
> > > http://www.youtube.com/watch?v=5IdWf83LNvw
> > >
> > > 250 V from variac, more like a single streamer output:
> > >
> > > http://www.youtube.com/watch?v=18yltrMa5AE
> > >
> > > Enjoy
> > >
> > > teslina
> > >
> > >
> > >
> > >
> > >
> > >
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>
>
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