krutzbeuazen
Newly Enlightened
Hi,
okay, i will forget about that "LED-array with Step-Up" idea, seems like impossible.
so i now plan to run *many* LEDs on 4 or 8 nimh cells.
some questions:
1) how do i do it? just a bunch of resistors? doesnt sound good, i waste lots of energy and it gets dimmer fast (i guess?). at 4x1,2v = 4,8v and 3,3v LEDs it would be quite a lot.
2) how much can AA nimh cells output? would 4 (or better 2x4) cells in series be able to output 10w (100 LED) plus resistor loss? how about 40w? (damn, those UV LED are unhealthy cheap!)
3) any info about the difference in wavelength in near-uv? are 395nm "okay"? big difference to the really expensive lower ones? (i just know about the visible spectrum, huge differences between 650 and 635nm for example)
thank you all for your patience, i just didnt find much info about LED-arrays, unfortunaly.
well, if i finally get this built, you dont have to expect me asking questions for a while (just following the topics then) ;-)
manuel / krutzbeuazen
okay, i will forget about that "LED-array with Step-Up" idea, seems like impossible.
so i now plan to run *many* LEDs on 4 or 8 nimh cells.
some questions:
1) how do i do it? just a bunch of resistors? doesnt sound good, i waste lots of energy and it gets dimmer fast (i guess?). at 4x1,2v = 4,8v and 3,3v LEDs it would be quite a lot.
2) how much can AA nimh cells output? would 4 (or better 2x4) cells in series be able to output 10w (100 LED) plus resistor loss? how about 40w? (damn, those UV LED are unhealthy cheap!)
3) any info about the difference in wavelength in near-uv? are 395nm "okay"? big difference to the really expensive lower ones? (i just know about the visible spectrum, huge differences between 650 and 635nm for example)
thank you all for your patience, i just didnt find much info about LED-arrays, unfortunaly.
well, if i finally get this built, you dont have to expect me asking questions for a while (just following the topics then) ;-)
manuel / krutzbeuazen