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  • Users: cdrov
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  1. C

    What does "Bake a LED" means ????

    In the CREE tech specs of XR-E i read the following.. Baking Conditions It is not necessary to bake all XLamp LEDs. Only the LEDs that meet all of the following criteria must be baked: LEDs that have been removed from the original MBB packaging LEDs that have been exposed to a humid...
  2. C

    How can i solder Cree LEDS? Heeelppp

    Thank you all for your help, now i can hope i might solder them. I am thinking of using either a waffer for electronics with copper on the conductive side which seems to be the cheap solution or a double sided wafer where the back side has aluminium (like the stars used) which is a little more...
  3. C

    How can i solder Cree LEDS? Heeelppp

    Hi there, i have just got 20 Cree Leds that came without being soldered to anything (bare Led). As i see the led has the power leads at both ends while at the middle is a square surface probably for heat dissipation (The LED looks like this --- I [_] I ). So here's the question ... Should i...
  4. C

    Would anyone be interested in...

    What color temp are we talking about? Could it be warm light? What angle? and of course price....
  5. C

    I need suggestions on how to arrange the LEDS

    Hi, there, i have 20 CREES and i want to make a video light. So i would like to ask how close can i solder them and the most important is where can i solder them so that there would not be temperature problems????:mecry: And the second questios is how to power them? From 3,6, 7,2, 12 or...
  6. C

    Looking for Driver or Schematics

    What is the best surface to mount the leds? How many amps will the total leds draw if they are driven at 400ma each?:poke:
  7. C

    Looking for Driver or Schematics

    Thank you very much, i have to admin that i was not aware of something like that. I cant understand though if my battery would be able to give enough power to all the leds as also how am i going to connect them (in serries or parallel?) Thanks again
  8. C

    Looking for Driver or Schematics

    Hi there i intend to build a light using 10 warm P3 Crees' and 10 neutral white Crees from a 6Ah 7.2Volt Li ion battery. So what is the best way to drive all these LEDS (i would like to drive them at arount 400mA each)? can you suggest me a driver or a scematic to build one? And the second also...
  9. C

    Does anybody knows how this driver Works????

    I will try tomorrow to do that in case you are interested for the ic's yes they are amc's.
  10. C

    Does anybody knows how this driver Works????

    Thank you i am going to try the new set up right now and i will let you know:wave:
  11. C

    Does anybody knows how this driver Works????

    How much sould the voltage be to reach 1A?
  12. C

    Does anybody knows how this driver Works????

    Hi there, since nothing else was ready to be shipped from DX i ended up with the following 3W/5W 20-Mode 3x7135 Regulated Circuit Board for Flashlights driver (http://www.dealextreme.com/details.dx/sku.7879). Despite my efforts i could not managed to get more than 300mA (it is supposed to give...
  13. C

    What do you think for this?

    Thanks guys. I really liked VanIsleDSM's alternative with warm crees...thanks again
  14. C

    What do you think for this?

    Hi there i found this 8W 8-24V AC/DC 700lm LED MR16 Warm http://www.besthongkong.com/product_info.php?cPath=9_69&products_id=663 Anyone has any experience with the specific item or the company? I intend to replace my 50W halogen lamp which i use for shooting Video. Any suggestions would...
  15. C

    Need Advice on Building a Led light....

    Thank you VERY MUCH for all this usefull information... I am going to order some walm light while i am waiting for the drivers from DX. Would you think it would be better to go to 12V rathen than 7,2? I believe a 3,2Amh PB Battery is pretty light in terms of weight.
  16. C

    Need Advice on Building a Led light....

    Thank you all for your prompt responses. I have some more questions. Will the 7,2V 5900mAh battery will be able to give the necessary power to the 6 P4 Leds? Where can i get the optics you say? Regards
  17. C

    Need Advice on Building a Led light....

    Wow now it getsa interesting. But let me ask this. Would the 6 P4's i am going to use at 1Amp each?? have the same luminocity as the 50w halogen? What about the color temperature? is it possible to put a gel in front of them and be around 3K to 4K? And the last optics for flood light or...
  18. C

    Need Advice on Building a Led light....

    Since i am carring on my back the battery i wanted something less heavy. How about li-ion or Nimh batteries???
  19. C

    Need Advice on Building a Led light....

    Hi, there i need your help. I would like to BUILD a LED light (FLOOD) in order to replace my older 50W HALOGEN one and its 12V 7.2Amps Heavy Pb Battery. I am using this light on a Video Camera while i shoot ceremonies. I have tried several leds and arrays but i have not managed to have the...
  20. C

    Need to make a LED light to replace a halogen light

    Hi, there i need your help. I would like to construct a LED light in order to replace my older 50W spot. I am using this spot on a Video Camera while i shoot ceremonies. I have tried several leds and arrays but i have not managed to have the spread and the power of the old one. My latest...

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