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Laser Driver Circuit

Discussion in 'LEDs and Optoelectronics' started by Electro132, Jun 19, 2013.

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  1. Electro132

    Electro132

    261
    3
    Feb 12, 2013
    Hi,

    I need some help with designing a laser driver circuit. I found a red diode that could probably take 5 - 9 v easily but saw from other posts online that i would need a heat sink if i wanted to apply more power. Needing help to create the driver circuit.

    Thanks
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,496
    2,837
    Jan 21, 2010
    What do you mean you "found a red diode that could probably take 5 - 9 v easily"

    I think 2.3V is the highest I've heard ov, and in any case LEDs are current rather than voltage driven.

    Or do you mean it has a driver that you think will work up to 9V? If it does, you would (or should) not expect it to deliver more power at higher voltages.

    If it simply has a series resistance, then yes, a higher voltage will deliver a higher current.

    Perhaps you could point us to a datasheet for the device (or at least some specs) and these other "posts online" of which you speak.

    The tutorial on LEDs should tell you much of what you need to know to make a basic driver.

    High power LEDs are often on a metal star (or can be attached to one) and it is through this that they are typically heatsinked (heatsunk?)
     
  3. Electro132

    Electro132

    261
    3
    Feb 12, 2013
    Found a dvd burner. Also here is the link i found:

    https://www.youtube.com/results?sea...8j4.22.0...0.0...1ac.1.11.youtube.Tq1LHxvcKUA

    Just wanted to make sure if the circuit is correct.

    Thanks
     
  4. Electro132

    Electro132

    261
    3
    Feb 12, 2013

    Ok, how about a pulsed driver circuit? Could you help me build that? Thanks.
     
  5. Electro132

    Electro132

    261
    3
    Feb 12, 2013
    I'm thinking of building something that drives the number of pulses from slow blinking to fast blinking. The LD i have is a DVD so it should be able to handle a substantial amount of current. Also want to add some sort of picture to place on it.

    :)
     
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