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    What driver can I use to supply 3A?

    Oh!!! Well then that changes things... But one thing: would using your driver constantly at 3A damage it in the long run?
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    How laser diode drivers work; An Explanatory Thread

    Hey, I know this is 10 years old, but I'm losing my mind... Can you elaborate further on how to create a LM317 linear regulator with the op amp trick to reduce the power dissipated on the resistor? I keep searching online but I can't figure it out. It would be extremely useful if you could...
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    Sharp GH04C05B9G 5W 440-450nm

    Thank you again for the valuable info! I think I'm quite convinced about the linear regulator idea as a first build. Just a quick question... This sharp gh04c05b9g diode, I imagine it needs to be inserted into a module and then also insert the module into a heat sink. I was thinking of this heat...
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    What driver can I use to supply 3A?

    Oh I see... But if I include shipping to Europe I imagine it will cost quite a lot 😏
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    What driver can I use to supply 3A?

    Thank you so much for this explanation, it really helps! If space is not of any concern, would adding a bunch of capacitors in parallel on the output of of one of those cheap chinese drivers be of any help to reduce ripple?
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    What driver can I use to supply 3A?

    Thanks! I read that linear regulators have much less ripple than buck converters, but the trade-off it's that they're less efficient. That driver you sent seems nice! The only "problem" is that it costs much more than it would if I could build it myself, but I definitely had overestimated the...
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    Sharp GH04C05B9G 5W 440-450nm

    I really like the idea of building the driver by myself and actually understanding how it all works, so this actually seems very nice. But I have a few questions... If you were using a current sense resistor of 0.33Ω, and the reference voltage on the LM338 is 1.25V, your resistor would have to...
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    What driver can I use to supply 3A?

    First of all, you're awesome, thank you for the help. Second of all... Could you give me a short explanation to why the chinese buck converter from AliExpress I showed would be bad? I mean, what do the ones you posted have that make them be almost 10x more expensive? Also, the last one you...
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    Sharp GH04C05B9G 5W 440-450nm

    I know I'm super late to this thread but... How do you drive such a high powerful laser? I know you can drive 2.5A with a linear regulator such as LM338, but won't that be extremely inefficient? I mean, the reference voltage on LM338 is 1.25V, so at 2.5A the current sense resistor needs to...
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    What driver can I use to supply 3A?

    Hello, I want to drive a NUBM08 laser diode at 3A and make sure that it doesn't get destroyed. Originally, my plan was to do this with a linear regulator using the LM338, but then I have had many people tell me that it is quite stupid since using it at 3A would dissipate a lot of power as heat...
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    Advice on what components to buy for my first laser diode?

    Hey thank you so much for the reply! I have a some questions about what you said... 1) I don't mind for now to use just a wall power adapter as I just would like to learn about laser diodes basics in my own "lab". However I am really confused about the voltage I need. The LD says that the...
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    Advice on what components to buy for my first laser diode?

    Thank you for the exhaustive reply, that helped clarify many things I wasn't sure about. Do you think this buck converter would work as a driver? Also, one last question... It is my understanding that what I want to do is set the current, as the driver adjusts its own voltage to accomodate for...
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    Advice on what components to buy for my first laser diode?

    By the way... I think I have read that the NUBM08, when used as a single diode, should be driven with around 3A (although I'm not really sure if that refers to the single diode or the diode bank). But the LM317 I bought only is rated up to 1.5A. Does this mean that it's impossible to use the...
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    Advice on what components to buy for my first laser diode?

    Do you have any suggestions? The ad on AliExpress states that it is a glass lens though...
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    Advice on what components to buy for my first laser diode?

    Hello, I have decided that I would like to build a high power blue laser, however I am quite confused on whether I am selecting all the parts I need. Since it is my first build, I am not interested in making it as a hand-held pointer, but more as a tabletop laser. My idea was to use the NUBM08...
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    Ears and Eggs Collection!

    This gives me "Avengers assemble" vibes
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    Laserbuilder's collection of gas and other lasers

    How much did it all cost you?
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    My Rainbow -- Post Pic's of Yours

    Photos unavailable... :(
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    At what power will the beam damage your eyes?

    I know this is old but... Have you tried doing it eventually?




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