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I've built DD regulator circuit exactly as the diagram shows. GP diode in Axiz housing-OK. I'm using 4 AA alkaline batteries for 6 volts input to the circuit. I tried two CR123 3v lithiums in series for 6v source also. I've tried changing the 10 ohm resistor to a 5 and then none at all. Even...

Red Laser Protection Goggles I just received my New 620nm 632nm 650nm 760nm Red Laser Protection Goggle from eBay vendor Lightobjects. Link...

http://www.dealextreme.com/details.dx/sku.1997~r.73285186 The Deal Extreme 200mW green laser pointer is back in stock for $120 w/FREE shipping! Just pick the free shipping option and if you are in USA don't use the EMS shipping or there is a chance it might not make it through customs. I...

Brand new in box w/batteries. Just got it in, checked it out and put it back in the box. Says $14.99 marked down to $9.99 on Specer's site but they are SOLD OUT online. I don't know if they have them in stock in the retail stores or not. How about $20.00 shipped? OBO I won't charge extra for PP...