If youd like to try making your own, you could start with a - TopicsExpress



          

If youd like to try making your own, you could start with a diode. The diode should have at least parameters N, IS, and RS, and maybe capacitance. You then measure several points on the curve of your LED (or look up the curve at the manufacturers site) and plot these points using spice, then run your diode with a current source and change N, IS, and Rs until you get a curve that fits pretty good. Actually, i use a curve fitting program, which optimizes the three parameters, but even one done by hand turns out pretty useful and its informative to try this too. If you prefer i can post a few models ive used with good success in the past. Youll note that in the EE Course the latter lessons have one model for a Nichia which works out very well for constant current (not necessarily a circuit that puts out cc) running LEDs.
Posted on: Mon, 14 Jul 2014 12:13:16 +0000

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