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Re: 2 color neon ??
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>>2 color neon ??
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>Getting back to mixing colors. As many know an interesting use of neon and
>merc is that under the right conditions and a variable power supply you can
>get interesting nebulous mixes of blue, red, and pink. This can be further
>enhanced by using coated tubes that give interesting contrast e.g.
>green/orange.
>(Did I mention the rotating eye?)
>
>Anyway, the other kind of mixing occurs when gases are mixed and stimulated
>by different frequencies as in a Hanson Table or a Plasma Globe.
>
By all means Kenny, tell us about the rotating eye, better yet, put a picture on your
home page.
2 color neon brings up a question I was going to ask.
A month or so ago I bought a few neon clocks from Price Club. They are very cool
in that they have two tube segments that slowly change color. They were only
$20 or $25 bucks to boot. It was worth it just for the xformer. They are made in
China (of course, who else can do this stuff so cheap) and sold
by a company (coincidentally) called Chameleon. Well being the curious types,
Telford and I observed that when a scope probe (accidentally <g.>)got near this clock, it revealed
that the Blue and Green tubes were Blue and Green when the frequency was
high (18Khz) and turned Purple and Yellow respectively when the frequency
was low(1.8khz). Both wave forms are around 6% duty cycle. Magic? Not really,
the high freq stimulates the mercury and the low doesn't.
The tubes have neon in them and if you don't drive them too hard (6% duty),
you get purple and yellow instead of orange.
So the question is, does anyone have knowledge of neon/argon mixture and
pressure to make these tubes?
Conjures up some interesting animation ideas eh? A Basic stamp could easily
generate the waveforms.........................
Michael Hayden with his fiber optics and color wheels are getting jealous about now :-)
--- Frank Varnell
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