Randomblame
Well-Known Member
Nope, there is no magic voltage loss, its just no used. The constant current area is 24-48v so the COBs just take around 36v at max. current(10,4A/~2,1A per COB). Even if the driver works in CV mode they only take 36v but the risk to get thermal runaways are higher.Ok. Id be a bit carefull, ive seen people using cv drivers with higher voltage than the cob getting very high temps on their push-in or wago connectors. The cob side should be ok, as you soldered them, but check your connections on the driver side for high temps. The energy from the last 12 volts gotta go somewhere
For this reason he get only around 380-400w net. and don't use the full potential of the driver. All the rest is correct!
If there is only a 0,2v difference and one COB needs lets say 35,8v instead of 36v this COB would run a lil higher like the other 4(because he needs more current at 36v, which is the voltage of the circuit and the difference gets higher with increasing case temps. Remember the part of the datasheet where it says, the voltage of the driver depends on the circuit design of the end system. Lets say one COB fails and there would be only 4 COBs the voltage would immediately jump to 38v or so and each COB would run with 2,6amps.