CXB3590 36v and 72v

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VegasWinner

Well-Known Member
Malocan said:
still not able to read the table:? im sure, one day you are able to read it;-)
You compare 23watt (190lm/w) against 48watt (167lm/w), that is not fair
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You don't like the outcome so you attack my reading skills. how childish is that? Pay attention. I can read just fine. I see you finally learned how to read. I also have watched Greengenes and Mau videos, as well. I also studied some in college too. peace.
 
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VegasWinner

Well-Known Member
wonder why they produce two different voltages in the first place? It seems that more drivers can support he 36v version more so than the 72v version. I can run four 36v 35990's on a 350mA driver, a 700mA driver, a 1400mA driver, and even a 1750mA. I can also run two 36v 3590's on a 2100mA driver. Most of these are not available to the 72v version COB. For the 72v COB you can run the 240H versions for pairs at higher amperage and four at lower amperage. Fewer availabilities to run the 72v at lower amps to gain the inefficiencies available to the 36v COB. yes the 36v COB is more efficient at 23W while the 72V can only run at 49W with a lower efficiency. You just figured it out. I run my 36v COB's at 175mA, 350mA, 700mA, 1400mA, etc. flexible and efficient. lower heat, higher efficiency. peace
 
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PurpleBuz

Well-Known Member
VegasWinner said:
wonder why they produce two different voltages in the first place? It seems that more drivers can support he 36v version more so than the 72v version. I can run four 36v 35990's on a 350mA driver, a 700mA driver, a 1400mA driver, and even a 1750mA. I can also run two 36v 3590's on a 2100mA driver. Most of these are not available to the 72v version COB. For the 72v COB you can run the 240H versions for pairs at higher amperage and four at lower amperage. Fewer availabilities to run the 72v at lower amps to gain the inefficiencies available to the 36v COB. yes the 36v COB is more efficient at 23W while the 72V can only run at 49W with a lower efficiency. You just figured it out. I run my 36v COB's at 175mA, 350mA, 700mA, 1400mA, etc. flexible and efficient. lower heat, higher efficiency. peace
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one advantage of the 72V version is that I can run monos at a safe 700ma without having to parallel the monos and get similar performance as a 36V version running at 1400 ma. great for filling out the Vf of the driver.

I don't understand this statement: "while the 72V can only run at 49W with a lower efficiency"

can't I run a 72v version at 23 watts? wouldn't that have the same efficiency as a 36v version run at 23 watts ?
 
SamsonsRiddle

SamsonsRiddle

Well-Known Member
VegasWinner said:
wonder why they produce two different voltages in the first place? It seems that more drivers can support he 36v version more so than the 72v version. I can run four 36v 35990's on a 350mA driver, a 700mA driver, a 1400mA driver, and even a 1750mA. I can also run two 36v 3590's on a 2100mA driver. Most of these are not available to the 72v version COB. For the 72v COB you can run the 240H versions for pairs at higher amperage and four at lower amperage. Fewer availabilities to run the 72v at lower amps to gain the inefficiencies available to the 36v COB. yes the 36v COB is more efficient at 23W while the 72V can only run at 49W with a lower efficiency. You just figured it out. I run my 36v COB's at 175mA, 350mA, 700mA, 1400mA, etc. flexible and efficient. lower heat, higher efficiency. peace
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there may be less available drivers (especially higher dollar ones) for the 72v, but some times they make more sense. Since I have drivers that run at 600mA (from another light) and have "50-100v" it makes more sense economically to run 72s instead of two 36s per driver.
 
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