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Thread: Project : Laser By Batteries

  1. #31
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    be carefull the consumption can be more than 200mA
    use the 10ADC input to be sure.
    when you remove the wires the laser go off?

  2. #32
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    The 200mA fused plug is the only one i can get a reading from, it is MENT to be fused but i have wrapped some wire around the fuse points.

    I can NOT get a reading off the 10ADC socket, only the VΩmA one.

    The laser is NOT effected when i take readings.

    This could be something very simple im overlooking but everything SEEMS in order.

    Image of cut track here (zoom in)

    Do you have any IM software?

    Thanks,
    Regards,

    Aidan

  3. #33
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    this is strange because normally when the track is cutted the laser should be off and when reconnect the tracks the laser should be on....

  4. #34
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    I have made a pritty deep incision into the board \ track (as you can see in the image) i dont see how it would still be connected?

    What else can i try?

    Image of the 2 components that we are cutting the track between : Here

    Thanks,
    Regards,

    Aidan

  5. #35
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    yes i know thats a filter choke inductor and normally with track cutted there is no power to the laser diode.
    this is strange....

  6. #36
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    What would you recommend now?
    Regards,

    Aidan

  7. #37
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    i need to see the picture a little bit more....i keep you informed but this is strange .
    perhaps try the continuity position with laser OFF and see if there is a low impedance between the current test points

  8. #38
    Join Date
    Feb 2006
    Location
    France
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    Hello, I should maybe help you.
    I have the same type of green laser (but with a power of 100mW)

    The head is connected by two wire. She intergrated only the pump laser diode (an TO3 package diode) + a protecting diode (1N4148 or same) for prevent reverse voltage.

    So if you need the current / voltage you should test the voltage at the wire/board (or wire/head but harder to do ) .
    you have already mesured this and found : 1.85V
    and for the current you can easily cut one wire and test it.

    mine laser is most powerfull so my results are very different than yours. i found arround 1.79V @ 1.1A if i remember well.

    Bye

    Salut Genesis, si jamais je peux vous aider pour ce projet n'hesitez pas

  9. #39
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    PARIS
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    sorry but i not recommend this method this is why i don't ask for this because a laser diode is a HIGHLY sensitive component and if you cut one wire and touch it without ESD protection you can destroy the LD!

    c est trop dangeureux comme mesure, c est pour cela que je préfere qu il fasse une msure en amont de la régulation, sans déconnecter la diode laser.
    la moindre décharge ESD et adieu la diode!

  10. #40
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    Jul 2005
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    Ok, i dont want to harm the poor thing.
    Regards,

    Aidan

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