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I don't have an answer but thought I'd add my question here: I purchased these glasses :Yiding Safety Glasses 190nm-540nm Eye Green Blue Laser Protection Goggles Red - - Amazon.com Here are the quoted specs: Protection Wavelength: from 190nm to 540nm Protection Features: All-round absorption...

sgtbilkodle is at 31639

Thanks Pi R Squared. Le Quack is working on 2 drivers for me now...:)

OK, so anyone with a good driver suggestion? -2W 445nm M-Type M140 Blue Laser Diode from DTR -405-G-2 glass lens and your copper module from DTR -I have built the host with 3 RCR123A 3.0V 750mAh LiFePO4 Rechargeable Batteries in series. Output voltage is around 9.5 volts with momentary surge of...

DTR, Hopefully I'm not trampling the boundaries of etiquette with this PM. I've searched and asked and not comfy with my findings. I bought (FROM YOU) the 2W 445nm M-Type M140 Blue Laser Diode, the 405-G-2 glass lens and your copper module from your Ebay store. I have built the host with 3...

Thanks Pi R Squared for the info. That LD never did get hot. It's longest burn time was maybe 2 minutes continuous, monitoring the temp by feel, it barely warmed. Heat was imperceptible on the actual heat sink. As per your advice AND the advice I gathered from reading throughout LPF before...

Thanks for the welcomes. I read a good bit of the stickies but there's no way I reading them all...there's quite a bit of 'em...lol Hopefully my spider senses were correct about which ones were important.

sorry man; i just did negative rep on you and meant to do positive...i will send positive as soon as it lets me, twice.

PM'd ya Le Quack; thanks Y'all keep the answers coming tho! This forum rocks!

Very good advice Cyperon. I didn't consider my VDC source was too low for the LM317. I did have the 205nm LD's voltage in mind though. Also knew better than to hookup the LD straight to the batt without a properly set (for current) driver but was willing to blow it, as I just ordered a 2W...

oops...I put it in my first post because I am a noob and didn't see the user cp...updated now, thanx I have no trouble finding where to purchase them; just can't figure out which is the best driver to match my needs. PS: I dig your Pink-Floyd-ish avatar

To start; I have searched the forum and can't find the answer...maybe I need better search skills or should pay my teenage son to do it for me...lol Ok, so I apparently failed in my attempt at building a linear DDL driver (LM317) from a schematic I found online. It will light the LD but just...

From South GA. Please forgive and educate me if I mis-step with etiquette, as I respect your knowledge and appreciate your input. Building a 405nM handheld. Not sure what I'll use as host but have a few things laying around. Looking at some Harbor Freight cheapo LED flashlights as host...