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Oh!!! Well then that changes things... But one thing: would using your driver constantly at 3A damage it in the long run?

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...

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...

Oh I see... But if I include shipping to Europe I imagine it will cost quite a lot 😏

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?

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...

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...

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...

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...

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...

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...

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...

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...

Do you have any suggestions? The ad on AliExpress states that it is a glass lens though...

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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This gives me "Avengers assemble" vibes

How much did it all cost you?

Photos unavailable... :(

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