What's different about White LEDs?

[Norm Dresner]

I've seen several articles and circuits in magazines for White LED related
stuff. What's so special about them besides the color?

TIA
Norm

 

[Spehro Pefhany]

On Wed, 07 Jul 2004 02:49:38 GMT, the renowned "Norm Dresner"
<ndrez@att.net> wrote:

I've seen several articles and circuits in magazines for White LED related
stuff. What's so special about them besides the color?

TIA
Norm

Electrically they are blue LEDs, so they have fairly high Vf. The main
distinction is *how* they are typically used- for things like LCD
backlights on portable devices where there may be an array of them,
and energy efficiency is important. There are few such applications
for, say, red LEDs.

Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com

 

[Watson A.Name \"Watt Sun]

Norm Dresner wrote:

I've seen several articles and circuits in magazines for White LED related
stuff. What's so special about them besides the color?

TIA
Norm

They are (finally) a decent substitute for an incandescent light.
Google for OWLI forums for whatever you want to know. That's OddOne's
White LED Information Forums.