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Your circuit looks awesome! I like the focus filters that you desing, really good use of KiCAD as well. R8 is used as R_Shunt? are the 10miliohm used on porpuse to limit the effects 'cause the internal thermal resistence of the laser, and current feedback? Are you using the datasheet or are you...

Sr. that doesn't contribuite to the post, actually was kind of awkward, and most importantly you're not contribuiting to the post or the circuit., I'm waiting for your advices. BTW, I didn't knew that you are a big fan of mine! if you wanted my autograph you only needed to ask for it. Sr. that...

It is true that higher frecuencies (500khz or higher) are better for the control, but using a simple IR2100 allows to control that, I mean, I dont want to make the same thing that all hobbyists does, with the first circuit my results were excellent (you have the proofs there), if an P controller...

I've already implemented an EMI/RFI filter in the power supply (the X1 X2 ones), I'm using an exclusive source for the laser, but same ground due communications. Some experiments with LM317 using TIP41C transistors, and LM338 experiments, shown me that linear systems are not good for the laser...

Are you saying that I should use another Schotty diode instead Q6? I'll have only one reverse protection (the internal zener of the LD) removing Q6, that's the problem, my inspiration is that I want the system as secure as possible, kind of Alkatraz.

Using R15 as R_Shunt I can feed the system, but I have a problem, I've heard that soft startes can reduce the peak of the step down on the first microseconds, I know that C4 produces that voltage peak (right now I'm on less than 2% of ripple voltage), mi point is, due the thermal resistance of...

Got it, I'll implement a loop for current feedback as a trigger.

Hello there, I would really appreciate any advice, constructive idea or anything that could be improve on this circuit, it's design for a 4.5A laser diode. Thanks for your help.

Got it! Going deeper on Nichia's page I found that they made 20W laser diodes based on arrays of 1W diodes, by your professional point of view, do you consider that it's better to implement an array of low power laser diodes, or go with high power laser diodes, thank's for the information...

That's an excellent idea! I was able to find some good information about the reverse zener diode on Nichia's datasheets, but I'm not quite sure about the reverse diode at the output of the laser, 'cause it says that "it's used for electrostactic noise protection" insted reverse voltage...

KEK.

Actually, yes, lol, well... I don't really remember where I found it, in fact I used it in an tracking with the Pi and it has an excelent resolution, there was an 62ohm SMD resistor in the input, could this be a clue?; separating the cells I found the Junctions, P-N, but also other caps, my...

Removing the glass, this package is totally unnkown for me... I'm able to identify the P-N junction, but there's no code, no number.

Got it!

Even using duckduckgo ain't able to find anything related to the datasheet, I already search in this forum but there's no new information about the datasheet. Thanks for the advice.

Thanks for the information, I already contact with them, but there's no response.

How can I know about the laser power input and output, impedance, model, etc about this diode; I don't have a start point, books, articules, any information is useful. Thanks.

Hello there, where I can find the Nichia NUBM44-V2 datasheet? I need especific values of the curves, ESR and all the things related to this element, I was able to find some information on Project 450, but it wasn't enough, can someone provide me the datasheet or any information related to this...

Hey men, the most basic drivers for laser diodes are based on LM317 if your diode consumes less than 1.5A (this is the best one to begin with, it's cheap), if you're laser diode consumes between 1.5A and 5A is better to use the LM338, using a simple resistor you can drive the diode (this...

https://www.ebay.es/itm/Housing-w-405nm-450nm-Blue-Glass-Lens-Fan-for-5-6mm-TO-18-Laser-Diode-Module/131992654651?hash=item1ebb60133b%3Ag%3A328AAOSwImRYG9dq I've made one on my own, but you can use this as a reference, it must be greater for a 12mm laser case. Actually, on DTR's lasher shop you...