3 - 5 watt Zener diodes are around $0.40 each which would cost about $100. The cost without shipping of
2 - HLG-320h-c700b is $160. The smaller HLG drivers don't appear to dim to off due to their specs sheet stating 1-10v dimming. I looked into pretty much every alternative meanwell driver. The LDD option only allows dimming from 300ma to 700ma unless I'm mistaken? The LCM-U should be an alternative but is 50% more expensive than the HLG with 260 Zener diodes.
I was planning to use the
HLG-320H-C2100B until I learned that thermal runaway can cause a pretty serious imbalance in the current going to each of the 3 parallel strings. Apparently there is circuitry i can incorporate to fix this problem but that leads to more complexity.
2 - HLG-320h-c700b is $160. The smaller HLG drivers don't appear to dim to off due to their specs sheet stating 1-10v dimming. I looked into pretty much every alternative meanwell driver. The LDD option only allows dimming from 300ma to 700ma unless I'm mistaken? The LCM-U should be an alternative but is 50% more expensive than the HLG with 260 Zener diodes.
I was planning to use the
HLG-320H-C2100B until I learned that thermal runaway can cause a pretty serious imbalance in the current going to each of the 3 parallel strings. Apparently there is circuitry i can incorporate to fix this problem but that leads to more complexity.