Sometime this week I should be getting my new 1 watt luxeon star in the mail. If I hook that up to 3 NiMh AAs, or 3.6 volts, do I just hook the wires directly from the batteries to the LED, or do I need to use any resistors or anything?
Using a 1 watt luxeon
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ufokillerz
Enlightened
btw if you got the one on ebay for $9.xx
it will be a M3JW, which is crap, just like the M4JW's and N1KW's i got for $6.XX, you could have bought one off me for heatware =)
btw your bin luxeon has a min forward voltage of 3.27 and a max of 3.51, just make sure that current doesnt keep rising like it did for me and blew 4 luxeons before i figured why. average current is 350ma acording to the data sheets.
it will be a M3JW, which is crap, just like the M4JW's and N1KW's i got for $6.XX, you could have bought one off me for heatware =)
btw your bin luxeon has a min forward voltage of 3.27 and a max of 3.51, just make sure that current doesnt keep rising like it did for me and blew 4 luxeons before i figured why. average current is 350ma acording to the data sheets.
Are they really that bad? I'd still be willing to buy if you want to sell for cheap. /ubbthreads/images/graemlins/grin.gif I'm getting more and more confused here. If I feed the luxon 3 volts, exactly, just as an example, and all I do is hook it dirctly to the battery, is it going to die?
depends on the battery, i guess.
each battery has its own discharge capacity, means that it will supply current that was different from other battery. But i think you can safely connect them directly. Be wary though, just like ufokillerz said, if you got crap luxeon, you won't get enough brightness (it will be kind of greenie) from it unless you overdrive a bit. And overdriving kills luxeon. So /ubbthreads/images/graemlins/confused.gif
each battery has its own discharge capacity, means that it will supply current that was different from other battery. But i think you can safely connect them directly. Be wary though, just like ufokillerz said, if you got crap luxeon, you won't get enough brightness (it will be kind of greenie) from it unless you overdrive a bit. And overdriving kills luxeon. So /ubbthreads/images/graemlins/confused.gif
ufokillerz
Enlightened
the M3JW wont be a greenie, atleast i dont think it should be, i'll willing to sell mine for what i paid, considering i now have a "surplus". but if you want something thats real bright, be the Q3's from http://home.attbi.com/~theledguy/cpf_store/cpf_store.htm
So do the luxeons take less voltage than a standard Nichia? I thought they took 4.x
ufokillerz
Enlightened
the Ls requires significantly more current then a standard Nichia. 350ma Avg vs 30ma
ufokillerz
Enlightened
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MTFD17 said:
Will a 1watt luxeon be okay directly driven by a SF123?
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should be fine, but might not be as bright as you want.
MTFD17 said:
Will a 1watt luxeon be okay directly driven by a SF123?
[/ QUOTE ]
should be fine, but might not be as bright as you want.
It depends on the LS, if it has a low forward voltage like 3 volts, a single 123 will over drive it slightly, if it has a forward voltage of 3.2 volts, a fresh 123 might be just nice, fading slowly over 2-3 hours. You gotta get LS with low forward voltage bins. Q3H for example. The H means it's just nice for a 123. Or for that matter any other XXH.
