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Old 05-09-2012, 02:17 PM
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Quote:
Originally Posted by nrosdal View Post
is there a reason that you went with numerous rails of the 10w chips as opposed to just one rail of larger 25-50w emitters?
Several reasons. Price, more flexibility as to colour blending, availability of the heatsink/fan combos for cooling, forward voltage of 9-12 volts (more common voltage for power supplies, possible solar power). For me the 10 watt emitters are a good compromise between the more commonly used 3 watt Cree, Bridgelux, Phillips, Osram etc and the larger multi chip LEDs. You don't need quite as many as when you're using the 3 watters, they put out plenty of light and cooling isn't as much of an issue as with the 20 and higher watt emitters.
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DIY 10 watt multi-chip LED build http://www.canreef.com/vbulletin/showthread.php?t=82206
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