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Hi I was just wondering if I could run only 2 cobs instead of 3 on this driver. Its a 1800ma driver rated at 200w and is designed for 3 cxb3590. I know leaving this much space on driver isn't ideal but I'm planning on to add the 3rd cob wen I find my other adapter plate to suit my iceled heatsink.wich will be within a few days wen I go to my storage area at a friends
 
Rahz

Rahz

Well-Known Member
It will work. Efficiency on the driver will drop a few points but there's nothing technically wrong doing it. The driver will actually run cooler, slightly higher percentage of waste heat from much less wattage.
 
insert username

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Rahz said:
It will work. Efficiency on the driver will drop a few points but there's nothing technically wrong doing it. The driver will actually run cooler, slightly higher percentage of waste heat from much less wattage.
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So being that the combined forward voltage of 2x 36v cobs Is 72v, and the drivers minimum forward voltage is 76 v. Will this definitely work? If not I can probly find a way to mount this 3rd cob
 
Rahz

Rahz

Well-Known Member
Hmm, not sure how to explain that one but the minimum voltage is 67 unless I'm dyslexic.
 
Airwalker16

Airwalker16

Well-Known Member
Well @Rahz , at that low amperage it's obviously lower than 33.5fV then eh? Although 1800mA isn't that low.... but you must have some luck of the draw cobs that have a lot lower fV than the norm.
 
UncleBuck

UncleBuck

Well-Known Member
insert username said:
Hi I was just wondering if I could run only 2 cobs instead of 3 on this driver. Its a 1800ma driver rated at 200w and is designed for 3 cxb3590. I know leaving this much space on driver isn't ideal but I'm planning on to add the 3rd cob wen I find my other adapter plate to suit my iceled heatsink.wich will be within a few days wen I go to my storage area at a friends
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as long as you're not muslim this guy will help you

@Sativied
 
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