Marc Auslander wrote in
:

Controlling the current by a more efficient means would involve a
complicated bit of circuitry.


Yeah, one little IC chip built right into the LED's base. It's called a
constant current regulator. Some of them with this chip in them will run
on any voltage from 6V to 48V or higher. The chip will also rectify if you
choose to plug them into AC. Superbright LEDs has 115VAC/DC led
replacements for standard light bulbs, the most efficient room lighting
known to man. A 3W LED array is the same as a 40W light bulb....

I'd like to see them make an undercounter panel, not these little strips.
You'd stick it up, plug it in, and not bother to turn it on and off.

--
Larry

You know you've had a rough night when you wake up and your outlined in
chalk.

On Fri, 10 Jun 2005 12:23:27 -0400, Larry W4CSC
wrote:

Superbright LEDs has 115VAC/DC led
replacements for standard light bulbs, the most efficient room lighting
known to man. A 3W LED array is the same as a 40W light bulb....

There is nothing efficient about white LEDs. The most efficient
white LEDs produce about 23 lumens per watt. That's barely
better than Halogen at about 18 lumens per watt.

Cold cathode fluorescent (CCF) is where the efficiency is in
small lights-- at about 80 lumens per watt. And, they don't mind
being cycled frequently like their hot cathode fluorescent
cousins.

Unless you require sub-watt levels of light, CCF is the answer,
not LEDs (and they are a hell of allot cheaper than LEDs.)

If you want to play with CCF, check out the kits online. For
example at http://www.elwirecheap.com/coldcathodes.html

--
BRENT - The Usenet typo king.

Brent Geery wrote in
:

And, they don't mind
being cycled frequently like their hot cathode fluorescent
cousins.


Hmm...In my grandmother's kitchen was a dual Circline, hot-cathode,
fluorescent light with a real starter on each tube. As far back as I could
remember, I always loved to see it start flashing as the tubes heated up on
the starters kicking in. When Grandma finally got old enough to move out
of the house and into assisted living, some 50 years later, those same two
tubes were flashing on the same starter many times a day as people came and
went in the kitchen. Thank you, GE, for producing such a fine product,
sometime way back near World War II. There was a GE circle on the chrome
plating in the middle of it.

--
Larry

You know you've had a rough night when you wake up and your outlined in
chalk.