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From: firstname.lastname@example.org (Jorge Omar)
Subject: Re: What type of bulbs do signs use ?
Date: 22 Oct 2002 06:29:34 -0700
NNTP-Posting-Date: 22 Oct 2002 13:29:34 GMT
Decades ago I've used for regular traffic lights Tung Sol bulbs
specified at 5000 hs life.
Just to show how dishonest bulb manufacturers can be when they say 'we
do not know how to manufacture longer lasting lamps'
PS - there wasn't really anything different in them - just very well
And, if you do not know, the oldest active cartel on Earth was started
by Tomas Edison, exactly to avoid the manufacture of long lasting
"dsp1024" wrote in message news:...
> Interesting. They didn't look that big to me :-).
> "James Meyer" wrote in message
> > On Sun, 20 Oct 2002 05:20:53 GMT, "dsp1024" wroth:
> > >I think the regular incandescent bulbs couldn't take the
> > >on/off cycle they go thru but I'm no expert in light bulbs. Just
> > >anyhow. BTW the signs are the ones that can display text and roll stuff,
> > >etc. I think they're pretty standard in Las Vegas.
> > >
> > Incandescent bulbs can work reliably in those applications if they are
> > never turned completely off. Usually, they have a small current applied
> > they are "off". That small current isn't enough to make much light, but
> it does
> > keep the filament hot enough to greatly reduce the shock when they are
> turned on
> > to make light.
> > Jim
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