Picture posting is enabled for all :)
I even had one pillock trying to explain the reason why you had to use Luxeons was because they pulled 350mA and that made them more efficient....
Quote from: chriscross1966 on December 20, 2010, 01:16:55I even had one pillock trying to explain the reason why you had to use Luxeons was because they pulled 350mA and that made them more efficient.... There is a serious and sudden drop off in LED efficiency at high currents - but it's high currents per square mm of junction so it depends on the device and its heatsink.However most devices are rated to the point where the efficiency has dropped to half the best figure - it does mean that pushing LEDs to save installation cost is counter-productive...to the point where dirt-cheap CFLs start to look like a Very good compromise.
I'm about to start off with artificial light, trying on onions first