Recent content by aljsk8

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  1. aljsk8

    General LED Circuit maths question

    Please Help (This will probably be simple for someone.):ironic: I have 4 cree LEDS in a direct drive circuit, for the sake of this question the LEDs are designed to run in a voltage range of 5v to 6.25v. (I understand there are a lot of variables etc and with direct drive I can only talk about...
  2. aljsk8

    4 x mtg2 led area / flood light

    Years ago i made an area light to light up places to skateboard and snowboard at night every few years i upgrade the light with the latest led tech - just this week i put 4 mtg2 led on it here is the original...
  3. aljsk8

    maths problem for someone

    7mce leds direct drive off 12v 24ah sla mce are 5a bin neutral white at 370min lumens at 350ma following measurements taken at the battery terminals with the light on: 12.4v 3a please could someone tell me approx lumens (give or take 100lumens) from the above info - i think i have the answer...
  4. aljsk8

    brightness / temp

    leds... brightness decreases with temperature increase but with increased temp comes lower vf so current goes up and led gets brighter ok example lets say you have a cree xre with a vf at 350ma of 3.2v and its nice and cool and lets make up a figure of 100 lumen's now take cooling away temp...
  5. aljsk8

    Really bright LED streets lights in town

    Just started another topic about this but i thought id post here as its similar there are some new LED street lights in my area (housing estate) 36 leds per unit 4800 lumens semi / illum - albeit a different fixture - ive seen the construction in person and they are very well made specs...
  6. aljsk8

    stela street lights

    similar to a thread here ive just read - some LED street lamps have been installed in my area (manchester UK) so obviously i was very curious i did a little reaserch and found the manufacturer a few emails back and forth and the rep came in my office and give a presentation and brought a...
  7. aljsk8

    Sold/Expired Withdrawn: Mac clone in Stainless Steel -New light added

    Re: FS: Stainless Steel lights what condition is the jetbeam in? also im in the UK how much would shipping be?
  8. aljsk8

    REVIEW: Xeno CUBE E11 V2

    really want this light! there must be a way to get hold of one?
  9. aljsk8

    Torture test of Cree XR-E at Fish Tank for 2 Years

    was this under the surface, just touching or just close too? thanks for posting very interesting
  10. aljsk8

    new 4 MCE 2600 lumen work/play tripod light

    beamshots could be a problem as there isnt really a beam - just a flood of light - ill see if i can take some with my limited camera skills
  11. aljsk8

    new 4 MCE 2600 lumen work/play tripod light

    Ive asked for help and advice in various areas of this forum for my light build and after some time money and effort its finally finished the light was an upgrade to a light i made a few years ago old thread is here: http://www.candlepowerforums.com/vb/showthread.php?t=179661 it is used...
  12. aljsk8

    MCE questions - vf / ma

    i wont bore you with the detail i have driver i have mce's (series stars) im suposed to measure resistance across certain points on my driver do some maths and get a current - the figures arnt working if i crank the driver up to max (an unknown amout on a trimpot) the vf of one of the stars...
  13. aljsk8

    help me with my 2p2s mce stars

    im going to take it that much better means it is correct thanks Alex
  14. aljsk8

    help me with my 2p2s mce stars

    dont worry its on 500g of copper with a fan on the back so is that wired correctly now? thanks Alex
  15. aljsk8

    help me with my 2p2s mce stars

    Ok does this wireing look right thick red lines are wires thanks Alex
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