I purchased one of these for powering a few 50mW green DPSS lasers I have and it works beautifully! I measured a voltage range of 2.50V to 3.75V from the DC output when adjusting the variable resistor. So if your power needs exceed 3 volts, (require 3.3V) this supply can provide it for you. Very pleased with my purchase!
Rating:
[5 of 5 Stars!]