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Keep in mind that these drivers are actually 3.5A, not 4.5A as it says. I modify them to 5.2A by replacing one transistor. Actually, I can modify them as I see fit. I can make them 6A, 4.7A, 2.8A, etc. You just need extra of those little resistors. R100 + R620 +R500 = 2.86A R100 + R750...

Just yesterday I made two P4000 single mode driver lasers and they are very easy to work with. I turn on the turbo with a quick double push of the rear push button (without turning it off). For me, on turbo, it takes out 5A without problems. I use Litokalla high discharge batteries. I also...

@paul1598419 It is, but the NUBM0F can withstand up to 6A without problems. Especially for him, I see no problem working with this driver. In this case, 4.2A is nothing for this laser diode. I doubt it will damage the diode because 4A is quite far from the maximum it can handle. My 7-8W...

Yes, probably. But it will not exceed 5A under any circumstances. For blue diodes like NUBM0E, nubm0f, nubm44, it will work. With two batteries they will work at about 4A

Yes it is. Just sharing the result with two 18650 batteries. With lab power even at 6V it holds 4.2A

I had bought these drivers a long time ago for a test. This one is step down 5V and 5A. In a test with two 18650 batteries to a damaged NUBM0F laser diode, the driver put out 4.3A and held them steady. I didn't feel it heating up. High Efficiency Output 3.3V 5V 9V 12V 5A mini560 Step Down...

Probably some diodes are damaged more easily. Everything in the box is done right. My other NUBM35 laser had the exact same thing happen. At the very beginning one of the dids died and to this day all the others work at 4A. There is no word on overheating, because I never exceed 60 degrees...

NUBM37 already has one dead diode. I don't know what is the reason for this. Since I made the laser, its total working time is about 20 minutes. I don't believe it is anymore. The longest time it was used was about 2 minutes without interruption with the fan on at an operating temperature of...

The laser is now ready! It took me half a day of work, but finally everything is ready. I took a welding device from a friend because I don't have the nerve to wait for the slow courier companies in Bulgaria. My shipments have been in a distribution warehouse in Bulgaria for 10 days. A...

I decided to use a pack of 18 18650 24V batteries again. I have a nice BMS 24V 40A. I've seen videos and they say these converters have better efficiency when running at higher voltages. Also an 18pc 24V pack will save me some box space

After a few hours of work, the layout of the components in the laser is ready. Space is quite limited in this case. I'm waiting to get the point machine and BMS for the 16V and start putting it together. In this case, I could not use the 900W driver because it is too big for this box. As...

Today I received Litokalla's high discharge 20pcs 18650 batteries. With them I will make a battery of 16 or 20 units at 16V with BMS at 40A. I'm expecting to get a lot more stuff these days, like battery scoring urrds, lenses and stuff.

Can you give me some more information on how to do a soft start? What exactly should this kindensator be and where exactly should it be soldered? Is it the one in the picture?

Yes, if you use this driver you can connect all the pins exactly like the picture. I didn't recommend it to you because I recently received two, but they turned out to be a bad batch and couldn't power the array. There is information in my NUBM37 thread about this driver. I use the 600W ones...

Be very careful with the array pins. They are very fragile and can be easily screwed up. You use soft silicone cables because if they are hard they can twist the pins and break the threads in the array. That's why I use the board as a base, having previously disconnected all the contacts...

Yes, it connects exactly like in the picture. In this case, it is so if you use one driver for power supply. I use two, you will have to make it like in the picture. One driver will power both rows of diodes, and the other will power the other rows.

I tested the two 600W drivers today. They work great with NUBM37. I don't know if it's ok, but at 3.9A setting, the driver outputs exactly 50V to each laser. I don't know if these 50V are ok in this case. I used the battery from the drill 20V/4000mha/50A for the test. There were absolutely...

Riya NUBM37 High-power Laser Module 125W, Brand New Optical and Mechanical Disassembly Parts https://a.aliexpress.com/_mKEDFHw

Well, these arrays are not that expensive. I bought it from an Ebay seller for $220 via Paypal

Better instead of NUBM44, take NUBM0F. My opinion is that it is better to make a laser from a lantern body yourself. If you want to use this P4000 driver, here is a very good price. http://kaidomain.com/cdm-driver/P4000-20mm-5A-1-or-2-cell-3V-9V-Buck-Driver-Board I only use these drivers and...