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- Sep 12, 2007
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There are too many things wrong with that schematic to list. I'd start over if I were you if your laser diode isn't already dead.
So then what so i use as a power source?i also see your 9v batter as the problem assuming it is one of the rectangle ones. if it is, then you aren't getting enough current to reach 300ma. and if you are on a fresh batt. it wil drain out of regulation quickly.
use a battery/batteries that have at least a 600mah rating.
either way it is proven they are junk to laser hobbyists.
"which one will get the laser at a higher mAh output."
- Lasers don't output mAhs. They output light that we generally measure in Watts
40ohms that means...