Results 1 to 4 of 4

Thread: Modulation question

  1. #1
    Join Date
    Nov 2007
    Location
    Scottish Highlands
    Posts
    232

    Default Modulation question

    I have the green module in the attached pic. I am building a simple red/green projector. I have a couple of Robins drivers.
    I know the red is just a diode mounted in a heatsink, so see no problems there.
    Question - can I analogue modulate the pictured green module with Robins driver. The module only has red/black power wires - so does it have tec cooling etc?
    Thanks for any help, David
    Attached Thumbnails Attached Thumbnails green1.jpg  

    green2.jpg  


  2. #2
    Join Date
    Dec 2006
    Location
    Pflugerville, TX, USA
    Posts
    1,977

    Default

    Yes, I am using robin's driver with one of those. Works great.

    It doesn't have TEC cooling. But doesn't even get warm.

  3. #3
    Join Date
    Nov 2007
    Location
    Scottish Highlands
    Posts
    232

    Default

    Talk about a quick response!!
    Thanks - I was thinking of monitoring the current used and set Robins driver to approx the same.
    Kind regards, David.

  4. #4
    Join Date
    Dec 2006
    Location
    Pflugerville, TX, USA
    Posts
    1,977

    Default

    That's what I did. I stuck an ammeter inline and transfered those values to Robin's driver. Afterwards, I adjusted it using a laser power meter. Here are the values I found for mine with an ammeter:

    Laser threshold - 226mA
    Laser full current - 526mA

    I don't know what they are at right now because I didn't recheck them after adjusting with a laser power meter.

Posting Permissions

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