in general, what is more efficient, running a 1w led at 350mA or running a 3w led at 350mA? which generates more heat? and which generates more lums?
thanks in advance
Full Version: NOOB Question 2.0: 1w vs. 3w running at 1w
yup, ive got another for the led gurus:
in general, what is more efficient, running a 1w led at 350mA or running a 3w led at 350mA? which generates more heat? and which generates more lums?
thanks in advance
in general, what is more efficient, running a 1w led at 350mA or running a 3w led at 350mA? which generates more heat? and which generates more lums?
thanks in advance
What?
"3W" LEDs are typically far more efficient than "1W" LEDs. Even at 350mA, a "3W" LED has far greater output. For example, a typical ebay 1W LED has an output of about 70-80lm, while a latest gen XP-G is currently over 140lm at 350mA.
A "3W" LED will run cooler at the same current, as the conversion efficiency is much better on converting electricity to light. The difference in heat is fairly minimal though.
A "3W" LED will run cooler at the same current, as the conversion efficiency is much better on converting electricity to light. The difference in heat is fairly minimal though.
QUOTE (evilc66 @ Mar 16 2010, 09:01 PM) 
"3W" LEDs are typically far more efficient than "1W" LEDs. Even at 350mA, a "3W" LED has far greater output. For example, a typical ebay 1W LED has an output of about 70-80lm, while a latest gen XP-G is currently over 140lm at 350mA.
A "3W" LED will run cooler at the same current, as the conversion efficiency is much better on converting electricity to light. The difference in heat is fairly minimal though.
A "3W" LED will run cooler at the same current, as the conversion efficiency is much better on converting electricity to light. The difference in heat is fairly minimal though.
heebieebjeebieeweebie, blah blah blah lkjsldkjfl LEDS heebie jeebie 3w > 1w blah.
Ya digg?
Exactly 
thanks evil!
that right there, sealed the deal
o and is running at 350mA more efficient than running at 700mA?
QUOTE (Nemo Niblets @ Mar 17 2010, 02:07 AM)
heebieebjeebieeweebie, blah blah blah lkjsldkjfl LEDS heebie jeebie 3w > 1w blah.
Ya digg?
Ya digg?
that right there, sealed the deal
o and is running at 350mA more efficient than running at 700mA?
As far as the light produced? Yes. Twice the power doesn't get you twice the output.
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