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Thread: 100mw Red Laser Driver - How much voltage to apply?

  1. 10-03-2013, 14:11 #1
    botman1982
    botman1982 is offline Junior Member
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    Default 100mw Red Laser Driver - How much voltage to apply?

    This driver was parted out from something similar to the below projector.
    Does anyone know how to figure out how much voltage to apply? The only markings on the board are "S-19 P rev:1.0". I believe it was powering a 100mw red diode.
    Click image for larger version.  Name: photo.JPG  Views: 7  Size: 1.92 MB  ID: 40257

    Click image for larger version.  Name: S-59 Quad.jpg  Views: 6  Size: 4.3 KB  ID: 40258

    Thanks!
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  2. 10-03-2013, 14:22 #2
    absolom7691's Avatar
    absolom7691
    absolom7691 is offline Senior Member
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    Pretty sure it is 5VDC.
    If you're the smartest person in the room, then you're in the wrong room.
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  3. 10-03-2013, 16:04 #3
    botman1982
    botman1982 is offline Junior Member
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    Thanks. I'm reading up on drivers and testing drivers with a load: http://www.rog8811.com/laserdriver.htm

    I might be able to test it first before frying it.
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