I made a LM317 Driver circuit for my 1W 445 using a 1 ohm resister instead of a 10 ohm (like the one at Laser driver - It can be done ). I got 500ma on a dummy load. Hook it up to my laser for the first time and it worked OK I am guessing about 200-300mw it didn't seem too powerful. I wanted to make it brighter so I used a .6 ohm and then tried an .3 ohm resister. My dummy load would not go over 500ma. I am using 6 new 1.5 volt alkaline battery's as a power source.
I would like to drive it at 800 or 1000ma. Am I doing something wrong? Could the LM317 be bad?
I would like to drive it at 800 or 1000ma. Am I doing something wrong? Could the LM317 be bad?