"Dave Plowman (News)" wrote in message
...
In article ,
John Williamson wrote:
LEDS in fixed installations are noticeably more efficient than filament
bulbs, as they use a switched mode supply, with a total comsumption of
about 10% or 15% that of the filament bulbs for the same light output.

Cars use SMPS too for LEDs.

A difference is that 12v tungsten are already more efficient than mains
ones.

I'd love to see *any* LED with the same light output as halogen mains. And
by that I mean a near 360 degree output of the same colour spectrum. Not
just measured by pointing some crude light meter at it. And using the very
worst possible tungsten as the comparison.

Let us know when you can get halogen lights that can do this
http://www.youtube.com/watch?v=znivDtjl1N4