My LPC-815 just went led. It have been working fine for the past 1 week. My driver was base on LM317 DDL circuit(I just add additional LM317 in front to lower voltage). My driver is powered by a switching mode power supply 12v 1.7A. Using 2 LM317 for my driver. The first LM317 lower the voltage to 7.5V and the next LM317 to lower the current to 380mA(I wonder is it to high for LPC-815). I mount the aixiz module to a OdicForce Alloy Laser Module Holder / Heatsink with 120mm fan at the side to keep cool. I wish to know what cause my diode to led.
1. switching mode power supply?
2. 380mA too high?
3. driver build wrongly?
4. others?
1. switching mode power supply?
2. 380mA too high?
3. driver build wrongly?
4. others?