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Mate, that's kind of tao bao, as gazer101 said "hit or miss", I don't have experience with them, but using ebay or amazon ensures your money, if you going to risk with this companies you should try lower amounts of money, if you're experience is good then buy expensive things.

Hey SomeLaserGuy, I'm already using that diode model, testing it in a power suppy I've discovered that at 1V to 3V3 (an average of 500mA) it's already burning, I had to used a FAN to keep it runing, but when pass like 45-60 seconds it will continue warming. By my own experencie, I reccomend you...

Title already changed, my apologies again.

Sr. you are right, the tittle may be considered kind of offensive, I deeply apologize, that's wasn't my intention at all. The point is that I was working with other providers of laser diodes, and well..., taobao and ebay are not a reliable sources, that was the reason that I was asking; I'm...

Contact him via ebay, he's working and he's willing to make bisuness.

Hey guys, I already use general lens cleaner for G2, G7, and G8 laser glasses, but I'm not sure if this is the best option to take care this componentes. I would really appreciate your help with specific products for laser lens maintenance. Have a nice day.

OMG, you guys are even more ignorant than I though! ATX power supplies can provide you differents types of voltage format, as 3V3 and 5V, using this you can avoid the recharging of the battery. READ A GOOD DAMM BOOK!

Hey, this is a laser diode, it can destroys the eyes of some one, so we must be careful! DO NOT APROVE THAT KINDS OF COMMENTS.

Just focusing on power supplies, The capacitors called X2, are high voltage capacitors that are directly connected in the input of the switching supplies, in case of any damage you can shorcircuit them. The X1Y2 capacitors are for protection, and they're practically to neutralize the chasis of...

I forgot to mention that you can add an antiparallel zener diode (high power) at the ouput for your forward voltage circuit protection, instead a general porpuse diode.

Hey Platupus999, that circuit looks great, the battery voltage depends on the current that you laser diode needs. BTW, the efficiency of linear systems (LM series for example) has an averege of 50%, but the efficiency of switching systems has an average of 90% of higher, so you should try to...

Following your advices, implementing a proportional loop (P control) obviously with a resistor and a capacitor based on 3 times the times of turn off (16us), with a reverse 5V1 diode at the output, and limiting the current (with LM317 with some TIP71 transistors to amplify the current) at the...

... OK.

Hey, that's a good feedback, and already know it, but yes is good.

You miss understood what I was trying to say, if you supply an PWM to an LM it's obvious that you gonna have an PWM sigal output, that's why I used the step down, with that signal ripple I'm protecting the diode from the peak that you see if you use 1000uF F.E., if you believe that an totem pole...

What's the matter with all the people here? is this a twitter for electronics? I mean, it's ok the jokes and all that stuff, and I was providing ideas, that I already proved in reality, with facts based on books and experiments, and you... well. What I want to say is: that behavior is kind of...

It was just to confirm, no one knows what could happpen with new providers, thanks a lot!

Hey guys, do you know if this seller is the DTR's laser shop owner, I really appreciate your help I want to make a duo laser diode module, but I need another NUBM44; the description says "7W NUBM44-V2 450nm Laser Diode In Copper Module W/Leads & DTR-G-2 Glass Lens".

Someone has their little sentiments touched. Just wait foxs, and we gonna see, my CNC laser powered with STM32F7 will prove you what true mens are made of. BTW, you make my day with your comments.

Cyparagon, Giannis_TDM, I assume that you program Arduinos, so that explain all.