Laser Diode Driver

Discussion in 'The Projects Forum' started by aman92, Jun 12, 2013.

  1. aman92

    Thread Starter Member

    Aug 22, 2012
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    I am working on developing a laser diode driver. The diode requires about 10A current at 2V.
    I am looking for switching mode power supply circuits to achieve the same. Any help on the circuits would be appreciated
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,145
    3,054
    A 20W laser might stretch the bounds of the terms of service here, for safety reasons. We'll see.
     
  3. Shagas

    Active Member

    May 13, 2013
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    What are you going to be using that laser for? (just curious)
     
  4. aman92

    Thread Starter Member

    Aug 22, 2012
    33
    0
    Its for some spectroscopy work but that's later on. I need a way to drive the current first
     
  5. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,998
    745
    It can be done using an ATX psu, using the 3v rail, the psu can be made variable to give as low as 1.9v.
     
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  6. aman92

    Thread Starter Member

    Aug 22, 2012
    33
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    The current goes up to 10A but the operating power is about 13W according to the product specifications.
    Since I am not well versed with switching mode, a schematic of the circuit if available will be appreciated
     
  7. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    Be sure that NONE of the laser intensity will come into free space, where people are around.

    Laser safety is a serious issue:
    http://en.wikipedia.org/wiki/Laser_safety

    Bertus
     
  8. aman92

    Thread Starter Member

    Aug 22, 2012
    33
    0
    Rest assured the work will be done under supervision in the lab so there won't be safety issues
     
  9. bertus

    Administrator

    Apr 5, 2008
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  10. aman92

    Thread Starter Member

    Aug 22, 2012
    33
    0
    Seen the site....some good explanations but most of the higher power circuits there work at more than 50A
     
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