On Wed, 2006-11-01 at 22:27 -0500, David VanHorn wrote:
> >
> >
> > I note in the article they mention the long life time of an LED.
> > BUT, if one LED fails the unit, what does that do to the
> > potential life span of the unit?
> 
> 
> Makes it much less reliable.
> 
> I smell special interest intervention here..
> 
> 
> If I had a headlight with a significant number of LEDs in it, and I found
> out that I had to replace the whole thing because ONE blew, I'd be pissed.
> If you have 10 leds, then that's only 10% down if one fails, and even a
> slightly dirty headlight is down that much.

Well, the way I see it is as long as the headlight outputs at least the
minimum required amount of illumination you are OK.

So, design the headlight to put out say 150% of the minimum, then you
can have 33% of the LEDs fail before you're required to "shut off" the
headlight.

TTYL

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