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I have 52 laser diodes, rated 5VDC, 5mW, wired in parallel and powered by a battery, rated 5V, 2A (I measure 2.7). I'm thinking some diodes burn out because as the voltage drops, the current becomes too great. The diodes manufacturer states the maximum operating current of each diode is 20mA.
I have two questions: 1) Is there a formula for calculating a safe power supply, and 2) would adding an MOV or thermal resistor help?
I have two questions: 1) Is there a formula for calculating a safe power supply, and 2) would adding an MOV or thermal resistor help?