Andratos95
New member
- Joined
- May 6, 2022
- Messages
- 25
- Points
- 1
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 on the feedback resistor.
It was then suggested to me to use a "switching regulator" as a driver. Now, from my understanding this means that I could use a buck converter in some configuration that allows me to choose the current limit to 3A (but maybe this is completely wrong?). I am not interested at all on keeping the laser driver small, I would actually like to create the driver myself on a perfboard, but I don't know exactly what would be a good circuit for this task.
I have seen on AliExpress that they sell these cheap buck converters with a potentiometer to adjust the current limit (see image). Can I use these as a laser driver? If not, why is that?
Could you suggest a good laser driver that can provide a constant 3A which I can buy on AliExpress under 10$? (It doesn't matter if it's large).
Thank you!
I want to drive a NUBM08 laser diode at 3A and make sure that it doesn't get destroyed. Originally, my plan was to do this with a linear regulator using the LM338, but then I have had many people tell me that it is quite stupid since using it at 3A would dissipate a lot of power as heat on the feedback resistor.
It was then suggested to me to use a "switching regulator" as a driver. Now, from my understanding this means that I could use a buck converter in some configuration that allows me to choose the current limit to 3A (but maybe this is completely wrong?). I am not interested at all on keeping the laser driver small, I would actually like to create the driver myself on a perfboard, but I don't know exactly what would be a good circuit for this task.
I have seen on AliExpress that they sell these cheap buck converters with a potentiometer to adjust the current limit (see image). Can I use these as a laser driver? If not, why is that?
Could you suggest a good laser driver that can provide a constant 3A which I can buy on AliExpress under 10$? (It doesn't matter if it's large).
Thank you!