ouch3994
0
- Joined
- Jan 19, 2011
- Messages
- 56
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so i have recently (and perfectly sucessfully) assembled my first 445 laser, and it only had an output of around .9 watts....
the driver is a Lm317 with a resistor array to give me 1.3 ohms, with the entire thing heatsinked.
my input power was 6 AA batteries, and it all worked fine untill i noticed the batteries began to get low, and the laser was becoming less and less powerful.
i wanted a source of power from a wall adapter, so i used an AC to DC adapter that had an output of 12volts, at 1000ma.
i plugged it in and tested it. and now the diode isnt shining, and i assuming i killed it. However i have no idea why this killed it, when my multimeter showd that the voltage was exactly 12volts, and as i have read, that is within the limits of the LM317 driver.....
PLEASE SOMEONE HELP ME AND EXPLAIN WHAT JUST HAPPENED. THIS BROKE MY HEART! :yabbem:
the driver is a Lm317 with a resistor array to give me 1.3 ohms, with the entire thing heatsinked.
my input power was 6 AA batteries, and it all worked fine untill i noticed the batteries began to get low, and the laser was becoming less and less powerful.
i wanted a source of power from a wall adapter, so i used an AC to DC adapter that had an output of 12volts, at 1000ma.
i plugged it in and tested it. and now the diode isnt shining, and i assuming i killed it. However i have no idea why this killed it, when my multimeter showd that the voltage was exactly 12volts, and as i have read, that is within the limits of the LM317 driver.....
PLEASE SOMEONE HELP ME AND EXPLAIN WHAT JUST HAPPENED. THIS BROKE MY HEART! :yabbem: