Grower wrote: ↑

Tue Jul 31, 2018 8:51 am

May I ask you where did you get the Luminus cxm cobs?

i have bought on digikey website

Solved.
I have done a mistake on led wiring..
With correct series circuit, with 100% of dimmering i have 160+237w=397w

Now i have set all cobs to 75w, so i use 375w in total for light.

It's a good setting for these cobs in your opinion?
Look like a big sun eheheh!

Thanks to all for help!

Voltage reported are measured putting multimeter in the two output wires of power supply with cobs connected and turned on.
today i'll check resistence of dimmer and current.

ok i have done some measure. HLG-120H-C1400B with 2 COBs: [/b] V-out 49,5V (Voltage still the same if put dimmer from 0% to 100% don't change Volt) 84,4W - this is power measured from plug with only this power supply connected Your HLG-240H-C1400B with 3 COBs V-out 48,8V (Voltage still the same if p...

LEDG wrote: ↑

Wed Jul 25, 2018 2:19 pm

The 480W number you see in the calculator is the max power of that driver. The calculated power for your COBs is in the top right box, which is about 375W.

yes i undestard, and 370W is my goal from beginning.
but now i have less then 200W and i don't know why..

all light turn on at same time without delay, and bright appear the same on all 5 cobs. this evening i'll double check series connection and try with ohmmeter both potentiometer, then try individually each driver on watt meter, measure Volt out with multimeter on each power supply and i'll report re...

Hi Dave, first of all thanks for your reply. COB are wired in series on both of power supply, i'll check again but i'm pretty sure. Each power supply HLG-120H and HLG-240H have his own socket, and both are connected to one of this (i don't know right term in english sorry) then to the wall. https://...

Hello, i'm a new user, i the last months i have read a lot of tutorial and precious info on this website, and i have decided to build my own cob lamp with these components: 4x Luminus CXM-22-30-90-54-AC30-F4-3 3000k 1x Luminus CXM-22-40-80-54-AC30-F4-3 4000k i have used cob-led-driver-selection-tool...