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Spark disk toy




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From:  Ralph Down [SMTP:rjdown-at-fan-dot-net.au]
Sent:  Wednesday, February 04, 1998 9:05 AM
To:  Tesla List
Subject:  Re: Spark disk toy

Tesla List wrote:
> 
> ----------
> From:  Christopher Stone [SMTP:stone-at-etak-dot-com]
> Sent:  Tuesday, February 03, 1998 7:01 AM
> To:  tesla-at-pupman-dot-com
> Subject:  Re: FW: Spark disk toy
> 
> This is probably a "plasma disk" as seen in Star Trek Borg
> episodes. Pretty expensive to be considered a toy!  They do
> run on flyback type transformers and are very similar to a
> plasma ball except in disk form.  There is a webpage, out there
> somewhere, about them and the company that makes them.
> 
> I would like to make one too, so if anyone has any ideas how
> please post them!
> 
> > From:  Gary Lau  03-Feb-1998 0954 [SMTP:lau-at-hdecad.ENET.dec-dot-com]
> > Sent:  Tuesday, February 03, 1998 9:02 AM
> > To:  tesla-at-pupman-dot-com
> > Subject:  Spark disk toy
> >
> > I recently saw a cool toy at a store (something like a Spencer Gifts) in
> > the mall.  The unit is a disk, about 2 feet in diameter.  The disk is
> > made of two plates of glass with a small seperation between them.  When
> > running, sparks appear to originate from the center of the disk and
> > continuously and randomly shoot outward to the edges of the disk.  The
> > inside surface of the disk appears to be coated with something that gives
> > it a pixelated appearance.
> >
> > Anyone know what might be going on here?  Is this something one could
> > easily construct, powered by a flyback transformer based power supply?
> >
> > Gary Lau
> > Waltham, MA USA
> >
> >
> >

http://www.amazing1-dot-com/plasma.htm

I think this is the page referred to.

Ralph Down