Re: new LED torch (flashlight) bulbs more efficient?

From: Axel Berger (Axel_Berger_at_b.maus.de)
Date: 03/22/05 

Date: Tue, 22 Mar 2005 05:50:00 +0100

*Anthony Matonak* wrote on Mon, 05-03-21 11:17:
>Yes. A White LED is about as efficient at turning electricity into light
>as, say, a 60W 120V incandescent bulb. This is many times the efficiency
>of the little incandescent bulbs used in flashlights.

I don't know about the first part of your sentence, for all I know it
may be true. But the second half is dead wrong. 230 or even 110 volts
are very high for designing incandescent wires. Just look at a 40 W, 12
V car bulb in comparison to a 40 W domestic one, and the car bulb has
to survive a lot of mechanical load. On top of that torch bulbs are
designed for way less than the typical 1000 h. The two reasons combined
make them extremely efficient as incandescents go.

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