Bought a m140 blue diode, got the copper case that it goes in and all is well. I set the buck converter to 4.2 volts with a limit of .5 amps. Looks so cool at night. Only ran 3 times for 5 to 6 seconds at a time cause the big heat sink had not arrived. My question is. How sensitive are these, as I was standing in the dark I pulsed the power on probably 3 times, bam,bam bam and on the third bam the diode was open. This was not on purpose. So is this normal, I was running the voltage up form 2 volts until it fired around 3.?? when testing. So the question is did I do it or should it have taken the glitches. Do they need a ramp up circuit. Thanks, another small chunk out of my wallet.
Ran fine until the 3 glitches
Ran fine until the 3 glitches
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