I'm trying to power a circuit (including an Arduino Mega but not only) using the MeanWell power supply (12V):
I'm not able to understand how to make sure that the circuit get powered even if the sector goes down. I've connect the lead acid battery to B+/B- and the circuit to DC +V/DC COM. But when sector goes down the circuit is not powered any more.
Any help on how to connect the circuit would be helpful.