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Every time I try to look for a 20 amp or higher voltage regulator all I find is voltage regulators meant for cars or not laser related purposes. I am thinking of making something similar to a video made by styropyro, instead of using complicated custom circuitry could I use something like an...

Hello, I tried to make a driver circuit for a 5 watt laser using an lm317 voltage regulator. the diode is supposed to consume 5 volts at 5 amps. (I know it can since I have seen it create a much brighter output with unregulated batteries). the problem is the diode only consumes 40 milliamps...