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Howdy all, Wanted to make a nice lab laser with those new 9mm 445nm diodes such as the one listed here: Nichia NDB7875 445nm 9mm Laser Diode With High Quality Single Element Glass Lens | eBay Wasn't sure how I should go about heatsinking this guy. I'm somewhat competent with electronics so I...

Howdy all, I wanted to create a lab based driver for precision current driving up to 3A+ with low ripple. First question would be what is the peak voltage that I should design for in order to be able to drive all hobbyist diodes currently in use. 7V peak should be enough to cover all of them...

Howdy all, I'm a student and always wanted to try my hand at making a decent laser power meter. Projects been on the back burner for awhile now but finally had some time to work on it. Almost finished but still in development though. Pics: Features: -2.5W Peltier Optical Power Sensor...

Hey... my first laser. Woohoo... Know I know its ugly... but it was cheap-ish =P Driven with 150mA. Optical output = 110mW. Anyhow, wanted something very stable and wall powered. Now if your a cheapskate you will be very careful on what companies and people around you throw out =)...

Designed my own laser trip wire sensor circuit and well... I felt there could be a better way to do it so why not make a design contest? Doubt very few if anyone would be intrested but in the event that your are :D Principle Design a laser sensor circuit that would everyone out including laser...

https://hightechdealz.com/ Anyone else been having issues with the site as of late? I try to order something and it never comes to a payment screen. I even get a confirmation of my order via email but I never had a chance to enter payment information. Either the respected seller is going to...

Was taking a break from working on my boost drive and thought i'd make a fun thread for circuit nerds like me and possibly a resource for other people who are interested. Post your driver circuits here: Discrete Linear Voltage Regulator (Constant Voltage Out) Here is how i'd make a linear...

Hey, got a few products I'd like to row on out... issue is that I may shoot myself If I have to spend every weekend of my life soldering 100s of QFNs onto pcbs...ect. Anyone know of a good part placement service? There quite a few places out there to get great small cheap PCBs in sheets. These...

Sorry, newb question. I've seen Aixiz and others sell the generic module such as the one listed here. HighTechDealZ - Aixiz Laser Module - Blank However, there is no wavelength specification? Why is that? Is this good for 405nm - 1000nm? Also, why is it when it comes to glass lenses that they...

To any and all fellow graphic design hobbyists / paid professionals, heres a place to show off. :) Gallery: Superiorgamer on deviantART Random Images: Photoshop Vue6.0 +photoshop photoshop photoshop vue+photoshop

I would say without a doubt, Circuit Simulator Applet is the most amazing thing ever! .... Its a java ap so no "download" required. All simulations are live. At work we got orcad( non free version of pspice) .. which is very slow in comparison but I know its required for professional IC based...

Any idea how to remove ringing when PWMing? PWMing my laser diode in a low side driver configuration. Meaning my laser diode is connected to voltage+resistor in series and then the switch. (Done so I can avoid the almighty evil of a Pfet or the complexity of using a N channel mosfet as a high...

So I've managed to build a current source that is PWM-ible to about 500khz+ at 2A+. Now i'm just looking at building a Frequency source where I can change both the frequency and the duty cycle independently of each other. Most relaxation oscillators only have a 50% duty cycle and with 555 timers...

Was trying to build my own laser power meter but I can't seem to figure out where people buy their sensors or what is the proper verbiage behind the sensors used in a laser power meter. The ones that are stocked are too expensive and have features i'm not super interested in. Where as the...

Sadly I don't have any old ones around so i'm looking to buy a player and get a diode out of that. However, i've been hearing rumors about how some drives have very cheap and un usable diodes in them? Anyone know a common model that would be on say Newegg.com - Computer Parts, PC Components...

Hey all, my name is nate and i'm a electrical engineer working with johndeere. Was looking at all your driver circuits and they all by majority look like DC supplies? :thinking: . Now, I might be mistaken but I don't think dvd burners..ect operate at max power with a constant DC current. (aka...

Hey all, just joined. Looking at building a few lasers and this place looked fun source of information. If you guys got any recommendations from where to buy from i'd be honored if you shared. As for me, currently i'm a Electrical Engineering student at NDSU and I work full time for John...