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Wurkkos
  1. Holzleim

    1500W LED Flashlight, >100.000 Lumen, >1Mcd

    Re: 1.5kW handheld LED Power, >100k Lumen, >1Mcd, @jeffosborne: The lamp has no active cooling, just passive using a lot of metal and the heatpipes to spread the heat over the hole surface. From my experience until now this if fully ok so far, can use it outside with an average power of 100 -...
  2. Holzleim

    1500W LED Flashlight, >100.000 Lumen, >1Mcd

    Re: 1.5kW handheld LED Power, >100k Lumen, >1Mcd, Ok, lamp is back to full operation.... Took some very quick beam shots: Our garden, Skilhunt M200, 1200Lumen, 9.000cd: Mjölnir, tight and wide spot, ~600W, 30.000Lumen, 1Mcd: Mjölnir, all-full, ~1300W, 100.000Lumen, 1,xMcd: View behind...
  3. Holzleim

    1500W LED Flashlight, >100.000 Lumen, >1Mcd

    After some Months of development and build time, it is nearly finished now: around 1.5 kW maximum power >100.000 Lumen total output intensity >1Mcd 3kg weight four groups of light: 1x SBT90.2 behind 62mm TIR optic (tight spot, 560kcd) 4x SBT90.2 behind 30mm TIR optics (medium spot, 500kcd) 8x...
  4. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    Thanks all for the warm words. I think the only way to avoid such disaster is to use other battery technology. I think I can say that I did much to prevent call damage or stress: During loading I charged both series connected cell groups independently with continuous balancing. Furthermore I...
  5. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    :sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh: ----- R.I.P - 30.04.2010 ----- Only the good die young........... :sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh::sigh: One single cell defect can blast...
  6. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    What's the meaning of the word "dugg"? I can't find any translation for it. The link you posted leads to the first page of my thread. Is this ok or does my browser something wrong here; what should it link to?
  7. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    When saying it is not an EDC I mean that it is too heavy and tall to have it permanent with you (on a neck chain or lanyard), I use this light selective when I need it a portable sun. I not often put it in my backpack without any concrete intention for usage, just for having it with me "for the...
  8. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    I know it's not nice, but it can handle 150W without any sweating.... Making a PCB for only one piece wouldn't been worth the cost and labor for layout. There are 20-30 parts in total within the circuitry and all not that small. The brown wire has no electrical function, it is for heat...
  9. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    Now finished external charger for my creation: - 2A - 16A adjustable charging current - Atmel Mega8 microcontroller - Synchronous dc/dc converter circuitry for main current (2-16A) through both LiPoly cells in series - Dedicated 0,5A charging circuitry for each LiPoly cell; used for balancing...
  10. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    I think it is not the infrared radiation you feel when putting your finger in front of the LED. The amount of IR a white LED emits is negligible in relation to the energy emitted in the visible spectrum. What you feel as heat radiation is the visible light that is absorbed by your finger (or the...
  11. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    By the way, you mentioned "burning"...... A piece of paper being burned by the MC-E's intensive light output. Note that it is pure visible light that burns the paper. The LEDs do not emit any infrared light like an incan or HID.
  12. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    @deusexeathera: Next light will be either a really small light (samller than my David) or a HID monster (HID > 500W, need custom designed ballast operating from 2s-4s LiPo cells). @toby_pra: Will use it for: - running in the woods - barbecue in the dark - light on a small sail boat - photo...
  13. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    Just want to mention another application for my light: Usage as powerful photo light. In the photo below I used the flood at about 10-20W. Could have been some more next time, there is enough room left until max power.... My daughter playing in the bathtub (both camera and lamp kept dry...
  14. Holzleim

    Cree Q3-5A vs Cree Q3-3A?

    I was in the same situation you describe: Originally I wanted 5A MC-E for my big 500W LED light, but I found no affordable source for buying K-bin 5A MC-E. But I had access to well priced 4B K-bin MC-E, and finally I used them. Official CRI should be the same, the are some colder than 5A. You...
  15. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    Weight is about 2,5kg. Portable flashbang is good......:D
  16. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    @DM51: That's really a great honor for my to have my light mentioned between all these legends. So now there is slightly more LED presence in this area, thanks a lot!!! @Packesel: I pointed my light direction Koblenz, so you must have seen some kind of diffuse reflections :grin2: And that large...
  17. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    Thanks for the approving words! I didn't count the hours, but most time consumed the mechanical work due to the fact that I don't have any professional mechanical equipment. So I had to improvise many times, for example I did some milling with a cheap simple drill machine stand (with many...
  18. Holzleim

    Handheld 500W LED Power .... finally finished (Beamshots added)

    Re: Handheld 500W LED Power .... finally finished I was running a short time (30min) in the woods last Saturday. Most of the time I used flood only with around 100mA driven through the MC-E. When adjusting the three LED group's current I have implemented 13 levels with an relationship of 1,41...
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