On Thu, 9 Aug 2001, Andre Abelian wrote:

> Hi to all engineers,
>
> I apologize if the tag isn't right.
> I do not know how many of you use UV light for
> drinking water filtration specially to filter (H. Pylori)
> bacteria.

  Do you know that heliobacter pylori don't live in strong acidity medium
? Drink basic ( alkaline ) drinks [ plant-tea (plant read as vegetable and
not factory or power-plant) ] and your body will compensate that producing
more acid. It's verified.


 I have setup with 9 pieces of different filters and the last
> one is the UV light. My problem is that the light is always
> stays on and it burns every 7-8 months. According to
> report continuously leaving it on the UV light will last longer
> then turning on and off. What I am thinking is to dim the light
> when it is not used instead of turning it off BUT the question
> is How to dim it.? Does any one know how to dim fluorescent light?
>
  You may dim a little the UV tube by decreasing ( 10 to 35 % ) the
high voltage and keeping almost constant the filament. Usual, the nominal
voltage dropout is about 70...120 V on a standard tube, you may have
something else there.
A cheap stepup convertor like those used in high efficiency bulbs may help
you. See some schematics at:
http://www.geocities.com/vsurducan/neon.htm

Vasile

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