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  1. Thepolnw

    what laser is this??

    this is my old laser and couldn't figure the legs out so i try them all, and it didn't work:confused::confused: i measured ohm and they all connected to each other i open it up and got some pic for ya:undecided: can u tell me which leg is - and +??:bowdown::bowdown:
  2. Thepolnw

    my laser Kes400A problem

    i made my driver and it's exactly like this. YouTube - DIY: How to build a laser diode driver i test it and my laser wont come out the, i try IR and my camera can see little purple light and i wasn't bright at all, then i see little tinyyyy red light come out when i testing IR then i think i...
  3. Thepolnw

    Transformer and Resistor question

    I am new here and i confuse about transformer and resister they both change the Volt of current but what is the different??? thank you for reply
  4. Thepolnw

    Help me with Laser problem plz

    I got Kes400A laser diode(4 legs weak one) and i made my driver but using 100k ohm pot instead of 100 ohm pot other than that is normal but when i connect battery to driver laser just blink for 0.00001 sec and gone i DC and connect again and it be the same what is my prob??? thank you very much


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