Results 1 to 6 of 6

Thread: Laser diode drivers - assorted

  1. #1
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default Laser diode drivers - assorted

    Heres a few circuits for driving diodes

    Courtesy of Sam Goldwasser



    From Guido:


    Be careful as most of these diodes are M cased common anode.

    It just might be just easier to modify a Leadlight 105 board
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

  2. #2
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,488,324

    Default

    Marconi;

    Thanks for the input! Sam suggested the Roithner EU 38 board to me.

    I believe it would be cheaper to buy a finished board vs building my own, but I can't seem to find anyone that sells them in less than 1000 lot quantities. Same thing for the leadlight boards.

    Do you have a source for populated diode driver boards that can be bought in small numbers?

    Adam

  3. #3
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default

    Hey, For those of you who have tried to build your own...

    The second driver circiut is not correct..
    It is show having the LD connected from the top of the FET and ground ..
    Not correct.
    It should be connected to the + rail and the top of the FET.
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

  4. #4
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default

    Hey, For those of you who have tried to build your own...

    The second driver circuit is not correct..
    It is shown having the LD connected from the top of the FET and ground ..
    Not correct.
    It should be connected to the + rail and the top of the FET.
    Along with a protection diode, resistor and cap.
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

  5. #5
    Join Date
    Apr 2006
    Location
    Caracas, Venezuela
    Posts
    210

    Default

    Do you have a source for populated diode driver boards that can be bought in small numbers?
    I believe roithner can sell in less than 100 units, at least as far as their price list goes. I haven't asked them about that though, so can't really say.
    Remember the future?, That'd today, as you imagined it yesterday.

  6. #6
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default

    Do you have a source for populated diode driver boards that can be bought in small numbers?
    Yes, But ours costs a bit more than others you can find .,
    Also probably a bit ugly as they were made to fit inside our modules..

    Besides, we didnt find any that will work for our application..
    So we made our own, and glad we did!!!
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •