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  1. Hirudin

    LEDs wired in parallel, issues with different Vf?

    I'm planning to build a large RGB array using Luxeon Rebels and the CCHIPO driver. Currently I'm planning to have 28 sets of LEDs. By the looks of it, the blue LEDs should be run at 385 mA, which will make their typical Vf 3.2. The CCHIPO driver has an output limit of 39 V and 45 W. So, if...
  2. Hirudin

    How hot can a luxeon get? How much mA is too much?

    Hi, I'm modifying a 3D maglite to use a luxeon V "portable." I have a heatsink, but I am suspecting that it's not good enough. If I direct-drive the luxeon V with 6 AAAs. The heatsink (suspended in the air by the wires) gets pretty hot in under a minute. I think I'll order a couple hotlips or...
  3. Hirudin

    Multimeter 4.5, RMS, Temp, Sound, Humidity, Lux

    I've been looking for a good multimeter for a while now, and I've stumbled apon this one, seems like it could be just about perfect! It's made by Mastech, it's model number is MS8209. The cheapest I've found it is ~$60 shipped. Could this be the ultimate multimeter? I don't know jack about...
  4. Hirudin

    What's the real deal with different luxeon bins?

    What\'s the real deal with different luxeon bins? Hi, I've being scared off by all this "bin" talk. First of all, what are we talking about when we talk about bins? Is it the LED's color tint? Is it the brightness? Maybe how hot they get.. All of the above? Does it have something to do with...

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