DiY LEDs - How to Power Them

Sad_plant

New Member
LPC-60-1400 is not very efficient, it can't be dimmed and in fact isn't that cheap.
Thanks for the Answer Alesh. So i read they are about 85% efficient which is almost 9% lower than the HLG-185H-C1400, which is a lot.
However they are 60 watt each. So am i correct in assuming that my COBs will be running at roughly 51 watts and 1190 ma ?

You are correct that it would be roughly the same price if i were to buy a HLG-185H-C1400 to power 4 COBS, but i already run 2x cxa3070 on two LPC-60-1400.
 

alesh

Well-Known Member
Thanks for the Answer Alesh. So i read they are about 85% efficient which is almost 9% lower than the HLG-185H-C1400, which is a lot.
However they are 60 watt each. So am i correct in assuming that my COBs will be running at roughly 51 watts and 1190 ma ?

You are correct that it would be roughly the same price if i were to buy a HLG-185H-C1400 to power 4 COBS, but i already run 2x cxa3070 on two LPC-60-1400.
Not saying it's a bad driver. Your COBs are more likely running at about 36.8V, 1.4A, 51.5W.
 

Greenbyme

Member
Nice setup!!!! What did you use to mount your heatsinks and cobs to?
I used a steel sheet (very bad idea because very difficult thing to cut properly) and I made the holes to the size of the cooler. I fixed the COBS to arctic alpine with cob holder (so I drilled the coolers and I broke 3 drills :wall:). I fixed the arctic alpine to the sheet with aluminum angles that I cut to make the brackets (I could not find in this dimension of brackets).
It took a long time and if I had to do it again I will use sink profiles as REALSTYLES. :wink:
 

dionysus4

Well-Known Member
From MW:
PCD-40-1050B
PLD-40-1050B
PLM-40-1050
NPF-40-42(D) (0.96A)
HLN-40H-42 (0.96A)
HLG-40H-42 (0.96A)
PLP-45-48 (0.95A)
LCM-40

NPF is the most efficient @90%.

i dont really understand the data sheets for these type of drivers

will they adjust the voltage to the cob or are they constant voltage?
 

alesh

Well-Known Member
i dont really understand the data sheets for these type of drivers

will they adjust the voltage to the cob or are they constant voltage?
These are all constant current drivers. It means they will adjust their output voltage (in the rated range) to make their rated current flow through the circuit.
 

dionysus4

Well-Known Member
These are all constant current drivers. It means they will adjust their output voltage (in the rated range) to make their rated current flow through the circuit.

great thanks beacuse i was looking at the data sheet for the HLG-40H-36 to drive 1 cxb3070 and it looked like it has adjustments for both current and volatge- i was hoping it would auto adjust the voltage which it seems u are saying it will?


cheers
 

dionysus4

Well-Known Member
So it's faster to post here than get a quote from Jerry or find sellers not listed on octopart.

RIU has a new feature that allows you to read a post without hitting the reply button....especially when you have absolutely nothing useful to contribute. I think they had you in mind!
lol

keep in mind there are a lot of other sellers on alibaba with this part

i think 75 usd is the going price jerry wants 73 ish
 

harperr

Active Member
can anyone please tell me what MW driver do i need to run 3 cxb3070 on .8 A ? in series i really tried to understand that but after hours of reading im tired and just want the answer... thnx to the replier !
 
can anyone please tell me what MW driver do i need to run 3 cxb3070 on .8 A ? in series i really tried to understand that but after hours of reading im tired and just want the answer... thnx to the replier !
image.png Looks like the hlg-80h-c700 is the one you want. It will run 3 cxb's at .7a
 

Harpman1

New Member
can anybody tell me the difference between the HLG-120H-c1400 and the less expensive LPC-150-1400? both are 108 v and 150w.
 
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