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All the applications you mention use coloured leds ie, red/amber/green,
white leds are far less efficient or bright. Further, the light given out is
OK as a direct view source in a stop sign but it is very difficult if not
impossible to achieve a good source of illumination. What you tend to get is
a hot spot with a much lower level of surrounding light.

> -----Original Message-----
> From: Sean [mailto:ennis@es*.ca*]
> Sent: Tuesday, March 30, 1999 3:15 PM
> To: techdiver@aquanaut.com
> Subject: LED dive-lights???
>
>
>
> It's time for me to remove my feet from my mouth, and plant them firmly
> in my ears to ask a question:
>
> What are the merits and risks to using a light composed of an
> array of LED's
> (wired together in parallel) instead of the "standard" incandescent bulbs?
>
> On first glance it looks like a logical move to make.  They are now using
> them in my city for stop lights, and the tail lights on busses.
> Apparently
> LED's are more reliable than incandescent bulbs.  They use less power, run
> cooler(?), and if you should happen to blow one member of the
> array, the rest
> continue to work.
>
> Besides being unproven in the real world (AFAIK), am I missing something?
>
> Sean E.
>
> (I shall now return my feet to their standard oral-position)
>
> --
> "I remember when we didn't have these fancy-assed Weeeeeeeeeeeb
> Browers.  When I was I boy, you had to use FTP to get anywhere on
> the internet.  And half the time they didn't have anonymous ftp,
> so you had to hack in to the site.  But that was easy then
> because everyone's root password was 'admin' anyways.  Oy! We
> were real men then!" - Me
>
> Sean Ennis <ennis@es*.ca*>                  No spam-mail please
>
> --
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