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>

Hello guys from the Tesla List,

Greetings. I am a newcomer, Rick Chemas, and 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,
Rick Chemas.


----- 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
> >
> >
>
>
>
>