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  1. G

    Reason of decreasing laser intensity

    Hi everyone, I really need help regarding my laser. I have bought 2w laser 445nm diode from ebay. At the start it was working fine. There was no issue. I was using current voltage variable power supply for testing. But suddenly its intensity reduced. before it gave first mark on 550 ma where as...
  2. G

    M140 445nm intesity reduced help

    Hi everyone, I really need help regarding my laser. I have bought 2w laser 445nm diode from ebay. At the start it was working fine. There was no issue. I was using current voltage variable power supply for testing. But suddenly its intensity reduced. before it gave first mark on 550 ma where as...
  3. G

    Laser engraving machine

    Hello, I am working on the project titled LASER ENGRAVING MACHINE. My primary targets are wood and acrylic on which i have to engrave. I am facing few problems completing my objective. I will be thankful if anyone help me. Firstly i have made the circuit that i took from here: fun of DIY: A...


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