Nice! I looked at their emitters they're already got in production. Luxeon is still the king of power emitters on a per-device and per-watt basis, however. The Laminas might be easier to mount in many cases, Luxeons have a thermal slug in back which has to be heatsinked but can't be connected to anode or cathode and conventional insulators (silicone pad, mica, etc) won't work, and there's no screw holes etc to mechanically bolt the device down either.
Not hard to get ahold of at all, they're in stock. Now a 5W Luxeon Star white is $41, but the numbers just don't make sense over the $15 3W. The 3W can do 65 lumens @ 2.6W, or 80 lumens @ 3.9W. 5W can put out 120 lumens. Problem is, that 5W emitter is harder to keep cool, and that light output rating is only for a cold emitter. As the die warms up, it generates less light while using the same amount of power.
So, in addition to costing more than it should, you may find it difficult to sink that much heat and thus make the light output more similar to the 3W.
oh no, am I going to have to redo the leds in my roof again :wink:
Thats some cool stuff right there. If they can make something like that, then why are we still using power hogging incandescent bulbs? LED bulbs would save you a ton on your electric bill and they would last a super long time
If they can make something like that, then why are we still using power hogging incandescent bulbs? LED bulbs would save you a ton on your electric bill and they would last a super long time
This is why there is a big push towards using compact fluorescent lightbulbs (CFLs). An 11W CFL is apparently equivalent to a 60W incandescent bulb, though in my experience, they are nowhere near as bright, and the colour rendition is crappy.
oh no, am I going to have to redo the leds in my roof again :wink:
Thats some cool stuff right there. If they can make something like that, then why are we still using power hogging incandescent bulbs? LED bulbs would save you a ton on your electric bill and they would last a super long time
oh no, am I going to have to redo the leds in my roof again :wink:
Thats some cool stuff right there. If they can make something like that, then why are we still using power hogging incandescent bulbs? LED bulbs would save you a ton on your electric bill and they would last a super long time
we all arent using power sucking incandescents..
i use three CFL's ,...two 11W and a 28W most of the time ..they work well
those LED arrays look sweet..
oh no, am I going to have to redo the leds in my roof again :wink:
Thats some cool stuff right there. If they can make something like that, then why are we still using power hogging incandescent bulbs? LED bulbs would save you a ton on your electric bill and they would last a super long time
You can wire them in series. As long as you have a current limiting resistor, you'll be ok.
The current is the same throughout the whole string. the voltage drop across the leds would reduce the 120V down to a small value then a small resistor is also placed in series to limit the current.