bi-polar VTTC schematics

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ricardo Chemas by way of Terry Fritz <twftesla-at-qwest-dot-net>" <chemas6096-at-terra-dot-com.br>

 Dear friends from the Tesla List,

Greetings. I have a question, please, for
any of you who would be kind enough as to help me on this subject. The
question is:

I want to build a Bi-polar VTTC using a EIMAC 450TL tube (one or a pair of
those tubes), which could generate at least 21" sparks. Could you give me
some help with the calculations & schematics of it ? I wish to thank you all
in advance for your attention and patience.

Best regards,
Ricardo C. Chemas, M.D.

>
> ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Wednesday, August 21, 2002 8:30 PM
> Subject: Re: async rotary control
>
>
> > Original poster: "D.C. Cox by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <resonance-at-jvlnet-dot-com>
> >
> >
> > Your dimmer may not be giving it a nice looking sine waveform.  Check it
> > with a o-scope or for a quick test just replace the dimmer with a variac
> and
> > see what happens.
> >
> > Dr. Resonance
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Wednesday, August 21, 2002 11:13 AM
> > Subject: async rotary control
> >
> >
> > > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <A123X-at-aol-dot-com>
> > >
> > > I have an async rotary made from a 12000rpm angle grinder. Even with
> only
> > 2
> > > electrodes in the disk it's 400rpm and I wanted to try varying it's
> speed
> > to
> > > something lower. I was going to use a dimmer switch but when I turn
down
> > the
> > > dimmer it actually sounds like it speeds up and also vibrates more.
Any
> > ideas
> > > of why that happens? Also I was wondering if a cheap variable
> transformer
> > > could be made by winding one or two layers of magnet wire on a normal
EI
> > core
> > > then sanding the windings on one side and making a device with brushes
> on
> > it
> > > to slide across the sanded side to vary the voltage? I really don't
feel
> > like
> > > buying another variac to control the rotary but I have a nice core and
> > some
> > > thick magnet wire to use and I couldn't think of any reason why a
variac
> > > needs a O core except so that it allows for the use of a rotating
> > contactor.
> > >
> > > Mark
> > >
> > >
> >
> >
> >
> >
>