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post #8 of (permalink) Old 02-11-2012, 09:32 PM Thread Starter
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Chiefston's Avatar
Join Date: Dec 2011
Location: Tempe, AZ
Posts: 153
Voltages question

Thanks Milad. I will look into the Inventronics as well.

It looks as though 4 LEDS with 40 degree lenses, one shining into each corner, will have enough overlap that I won't need a 5th LED pointing straight down (although I might anyways... I'm really afraid of having TOO much light and starting an algae farm. Thus my want/need of a dimmable driver).

With only 4 LEDS, there don't seem to be any power supplies capable of pushing the 1-1.5A max current at such low voltages. For instance, the Inventronics 1100mA 50W LED driver bottoms out at 16V. With 4 XP-G LEDS @ 1100mA, they would drop roughly 3.3-3.4V which would only need ~13V potential... Thus it seems I am stuck using the 700mA driver, and powering the LEDS at only half capacity.

Am I looking at this wrong?
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