you can buy this now for $100:I am looking for one driver to run 3 CXB 3590 36V @ 2.8A and also one driver that runs two at the same efficiency.
I think they are made to run a bit more hard... Otherwise I would go for the 3070s.such high current it starts to get very inefficient though right..2100 is 49% i think maybe even little lower..1400 is 56% 1050 is 61%
What do you mean? Just to have a bit more voltage, 36 is cutting it to short?you can buy this now for $100:
https://www.trcelectronics.com/ecomm/pdf/hlg320h.pdf
you might need the 42V version to run them at 2.8A
NOOB ALERTyes thats a high current driver you run em in parallel not series
the 'C' in the HLG-320H-C2800 means constant current. which means if you put 1 or 2 or 3 cobs on there (in series) and they will each run at 2.8A. 4 wont run at all as the voltage is too lowNOOB ALERT
What is the difference between the 320-42 and the 320-2800 then?
They way you wire them?
Another question:
What would be the perfect driver to run two @ 2.8?
good way to explain itthe 'C' in the HLG-320H-C2800 means constant current. which means if you put 1 or 2 or 3 cobs on there (in series) and they will each run at 2.8A. 4 wont run at all as the voltage is too low
the other driver (HLG-320H-36B) is a constant voltage driver (36ish). cobs are wired in parallel
you hook one up, it blows up
you hook two up, they blow up
you hook 3 up, they run at 8.9A/3= 2.97 A
you hook 4 up, they run at 8.9A/4= 2.23 A
you hook 5 up, they run at 8.9A/5= 1.78 A
etc
an you explain how a 42V one would behave drriving 36 V cobs at higher currents where they pull 38+V?The HLG320h36 is actually a CC+CV. It is CC until it hits set voltage, then switches to CV. But everything else is true.
Read the data sheet man.c
an you explain how a 42V one would behave drriving 36 V cobs at higher currents where they pull 38+V?
Here's some Mean Well designations;the 'C' in the HLG-320H-C2800 means constant current
I Believe The 240's Are 91% Efficient The Soon To Be Released Meanwell 320's Are 94% Just As The ECU-320 Are 94% Efficient. Yes They Are More Expensive With A Higher IP67interesting. seem to be a little more expensive and a little less efficient than the meanwells but have many more options
datasheet for the driver pictured above:
http://www.inventronics-co.com/upload/EUC-320SxxxDT(ST)_2014101405165109311.PDF