Is this driver good?

Pi R Squared said:

No it is not, that appears to be a voltage regulator, not a constant current regulator, laser drivers provide constant current and adjust voltage as needed to provide constant current. Using that is the same as using no driver at all, you may as well connect your diode to some power supply or batteries without a driver, and that's not a good idea because it won't last long. Use a real laser driver, not a voltage regulator.

Alan

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Danielmarius said:

Thanks for the quick reply Alan, can you suggest me something else, or if I build one from a LM317 voltage regulator, 1N4001 diode and 2 resistors of 10 ohms?

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Pi R Squared said:

Well if you build your own from a LM317 the resistor needs to be about 1 to 1.1ohms, these can only do a max of 1.5A so you would need two in parallel and that can be done but I don't really recommend a linear driver for a laser of that power, they can accept a wider range of voltage but will get hot easily if the voltage isn't just right.

Also I don't recommend 2.5A, keep it to 2.2A - 2.4A, that diode can decrease in power above 2.2A although generally 2.4A is the safe level. I have a laser I built with that diode and am driving it at 2.2A with this driver:
Survival Laser Driver
That driver though is for a flashlight style host so it's maybe not be the right one for you. Have a look here:
https://sites.google.com/site/dtrlpf/home/flexdrives/x-drive
DTR also sells on eBay and Amazon. Or look here:
http://laserpointerforums.com/f39/x-drive-x-boost-88589.html
But if you need something with modulation then someone else will have to advise you.

Alan

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Danielmarius said:

Thanks Alan, I'll have a look on those, although a TTL driver would be more suitable for me

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diachi said:

https://innolasers.com/shop/index.php?id_product=11&controller=product

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Danielmarius said:

That's perfect. Thanks!

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