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    Specialized Power Supply

    Hello! I am trying to build a low cost power supply (driver). It needs to be current limited (adjustability is good). It's going to be used to operate an optical device so regulation based on feedback from a photodiode would be superb. I've looked around at a lot of circuits but none seem to...
  2. R

    Daylight Controlled Solid-State Lighting

    Hello, I'm in the process of building a new (small) aquarium and I'm always bothered by lighting problems. I had this idea... Have Red, Green, Blue, UV, and IR LEDs in groups in a large array over the tank to produce realistic lighting. The first problem is, of course, where to find the...
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