In article ,
Arfa Daily wrote:
And as to who says that flourescent backlighting is inefficient - well I
do, actually. I have this morning been mending a bunch of LCD TV power
supplies that I do regularly for a company. They come from a
manufacturer that supplies them to many TV manufacturers for use in
their LCD TV sets. The main - as in biggest, chunkiest and most
heatsunk - rail, is without doubt the 24v one that feeds mostly the
backlights. A small amount of power is also drawn from this rail by the
audio output stages, but by far the lion's share goes to the backlight
inverter.

And the same will apply to LED backlights. It's a big con that LED are
more efficient - they only are where supplying narrow bandwidth light. As
soon as you try and make them produce continuous spectrum light - ie white
- the efficiency goes way down. Of course they may improve - but then
again so may fluorescent.

--
*Women like silent men; they think they're listening.

Dave Plowman London SW
To e-mail, change noise into sound.