Bonjour
No actually from Cree spec @1400mA 182,54lm/w... 56,34%...and 34,89V at this mA...and 35,97V @2100mA...I guess they would be 35,5V @1750mA!
One of us is wrong...we need a third one...help!!! Lol!
CU
OK, I follow your math..assuming the driver would allow a voltage of (34.9*2)
69.8v instead of its rated min. of 71v. I think this would work 100% fine with 3 chips because it would then be well within the spec of the driver and running in the 104.7v range.
Maybe it would just run in some sort of 'safe-mode' and cut current @ (35.5*2) 71v.
Done tapping my sinks, TIM applied, chips and holders installed. Getting into wiring now.
Who knows whats going on here??
Update: Just wired on my AC plug, and plugged in w/o load. Reading 143/4 volts. Afraid to add a load that requires 70 volts to that.. I'll be patient and wait until I can get the 2nd half of my rig built later this week. At least I can continue with drilling, tapping, and wiring.