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- Aug 30, 2015
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So I built my own driver and although I do not have the laser module installed into the heat sink yet I have put my meter on the output terminals for testing and used a simple led diode for testing also. I read about 340mA output and 6.5V when my meter is on the output terminals . I intend to hookup to a Mitsubishi LPC-836 . Data sheet requires 340mA max and operating voltage of 3V. I am using a 9v battery as my supply and built the following driver circuit :
http://laserpointerforums.com/attachments/f42/11702-diy-homemade-laser-diode-driver-ld_driver_schematic.jpg
Except in my circuit I used (3) 10ohm resistors in parallel, not 2 . I've read that the lm317t will dissipate any unwanted voltage once the LD is connected to the output of the driver but I'm nervous about jus hooking it up since I only have 1 . My question is should I reduce my power supply to (2) AA batteries in series to achieve 3V or can I leave the 9V battery supply?
http://laserpointerforums.com/attachments/f42/11702-diy-homemade-laser-diode-driver-ld_driver_schematic.jpg
Except in my circuit I used (3) 10ohm resistors in parallel, not 2 . I've read that the lm317t will dissipate any unwanted voltage once the LD is connected to the output of the driver but I'm nervous about jus hooking it up since I only have 1 . My question is should I reduce my power supply to (2) AA batteries in series to achieve 3V or can I leave the 9V battery supply?
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