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I set out to design and prototype a good single cell 445nm boost driver a while ago, because I have a need for it. I have tried many designs and I'm having success with some of them. At the moment up to 2.4A @ 5.5V isn't a problem with an 18650. Even a good 18350 works. Running at 1.8A @ 4.8V...

If this has been posted elsewhere in the forum I apologize. 405nm 50-160mA driver for $4.5 + $3 for shipping. http://www.rayfoss.com/pro_info.asp?id=1530

I found a mutilated Spectra-Physics VS1200 barcode scanner in the trash at my work place. Apparently someone tried to power it directly with 220V and not with a 5V/12V adapter. After the smoke came out the guy disassembled it and threw it away. I think the diode module will still be okay. How...