Recent content by zxcasd

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  1. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    Agreed. And, in truth, ubiquity is really what we need; the overtaking by LEDs of fluorescents and incans is inevitable - right now we're in that uncomfortable middle time where the LED prices are decreasing slowly as ubiquity increases; eventually there'll be a tipping point when the price will...
  2. Z

    DX 15W driver + Bridgelux

    Note: I've found through my testing that Bridgelux's ratings - given adequate cooling - are VERY conservative. I've pushed both the C1200 and C2000 arrays to their output limit (right at about 4A is where lumen output levels off) without any issues. Granted, I performed these tests with a huge...
  3. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    I just wanted to mention that I posted a tongue-in-cheek entry on my blog asking about the Vf/ma direction, particularly as concerns those of us who really want a lower Vf, and I was stunned to check my mail this morning to find a private message from Bridgelux. I posted the content here on the...
  4. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    Hmm. I took a closer look at that ES page, and raised an eyebrow at the BXRA-W1203. Lower Vf and higher current than the 1202 with only slightly less efficiency for the same rated output. I wonder whether they're planning on continuing this trend. I'd really, really like to see a 2000-series...
  5. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    I wasn't intending to test the ES arrays only because in my own applications, the extra 15% efficiency doesn't do anything for me when also given the extra 15-20% in cost, and given that the efficiency is reflected in lower Vf and current rather than increased output. I have virtually unlimited...
  6. Z

    BridgeLux BXRA-C1200 and BXRA-C2000 extensive tests to 4A

    Folks, I posted this over in the LED forum and one member kindly suggested that I post here as well. In short, I've started playing with the large Bridgelux arrays and have gotten some great data that shows that BL is producing an incredible product at a great price-point. Here's a link...
  7. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    Oh, one other thing - as you mentioned, my tests do appear to conform very well to the datasheet expectations. The lm-to-current curves from the datasheet gave me a higher expectation than what I saw in testing, until I factored in the die temperature (which I can now measure) - the datasheet...
  8. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    Thanks for the referral, blasterman - I'll check over there, too. My blog traffic has been picking up considerably lately, so there's definitely plenty of interest out there. I completed my C2000 tests last night and got great data, now including die temperatures. I continue to be impressed by...
  9. Z

    Smoke tests on BridgeLux - V, A, lm to the max!

    Hello, CPF. I've been lurking here for quite a while just becoming educated, but recently I've started diving into this new hobby with reckless abandon. After seeing flint357's post on the Bridgelux C1200s as applied to a car scenario, I decided to order a pair and put them through a smoke...
  10. Z

    WHITE 20W LED

    One word: don't. Why? BridgeLux blows these things way on the lumens-per-dollar scale. Look at the BridgeLux BXRA-C1200, and then look at the "smoke test" I performed on one on my blog. The result: The rated typical output is 1320lm at 13.2V/1.3A, for $13.00 from Element-14. Your Chinese one...
  11. Z

    AMC7135 Specs Inside **UPDATE**

    LM317 ok with AMC7135-based drivers? Hello all, I apologize for the Thread Necromancy, but I've been lurking for a very long time, and am finally starting to dive in, and I have a general question regarding these drivers. I'm hoping to use various of the AMC7135-based boost drivers from DX...
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