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So, a week or two after making my first semi respectable burning laser (here), for some reason last night it suddenly dropped to less than half its original power..
I can't think of what might have caused this, I've been running it on a short(ish) duty cycle, turning it off for a couple minutes any time it starts to get warm.. I've checked the battery, it's still at 7.4v, I've checked the voltage and current going to the diode, 3.1v @ 351mA for my short open can... all completely within spec, yet it's now the brightness of maybe a 10mW... Anyone know what could cause that? It was on when it did it, and I wasn't touching it at the time, it just massively dropped in brightness, spontaneously and for no reason.
I can't think of what might have caused this, I've been running it on a short(ish) duty cycle, turning it off for a couple minutes any time it starts to get warm.. I've checked the battery, it's still at 7.4v, I've checked the voltage and current going to the diode, 3.1v @ 351mA for my short open can... all completely within spec, yet it's now the brightness of maybe a 10mW... Anyone know what could cause that? It was on when it did it, and I wasn't touching it at the time, it just massively dropped in brightness, spontaneously and for no reason.