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Re: NEON- red turn blue...2 color tubes




Dear Matt,

building the transformer yourself is VERY complicated. Mainly the adjustment;
without proer high frequency, high voltage test equipment absolutely
impossible. 

But you can but such a transformer for abt. $800,-- (don't want to shock you, 
but it's true).

This unit will light only two 5 foot tubes (!).
This out of the US limitation on 15kV - the surge peak voltage you need to 
fire only the red has to be so high for the selective purpose. 

BTW: This unit is very noisy, too. 

It is difficult to adjust the amount of mercury and backfill with the right 
pressure of neon, which has to be done VERY accurate to assure the correct
partial pressure ratio. 

Have no lifetime experience on the tubes / xfrmrs.

So for standaard signwork it is always better to use two tubes with 
a standard animator.

Marcus


> 
> List,
> I know this was disccussed previously, because i have looked it up on the
> archives, but I could not make anything from the letters, because of missing
> info.
> Is there a way that i can make a red blue transformer, and what is the ratio
> of the tube , pumping presure, how much merc... ?
> Does it not deal with the frequency of the tranformers out put, and if so
> can I control this via a 555 or some other device?
> 
> Thanks 
> 
> Matt
> Dilling@erols.Com
> 
>