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Trade in your Cold Cathodes for LED's!
Cold Cathodes are bright, fun, and bring a smile to everyone's face when seen. I have used Cold Cathodes for a while and the usage of batteries was absurd, over 16 batteries every four hours! This...
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Using AC with LEDs (Part 4) - The New Technologies
Some of the roadblocks in general acceptance of LED in the home has been the relative high cost per lumen and the complicated and clumsy power conversion systems. In recent months, a number of new...
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High Efficiency 9-volt LED Flashlight with Touch control
Using only 10 off-the-shelf parts, this simple circuit converts power from a 9-volt battery to run 2 white LEDs at 20mA, while only using 13mA on the battery - which is over 90% efficient!By:...
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Stainless Steel Rose from Scrap Metal
This is a rose sculpture I TIG (GTAW) welded at school. It is made from left-over stainless steel scraps that were straight off the shop floor at my school welding shop. I believe this project embodies...
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