A high power LED flashlight

Building flashlights seems to be a fixation of mine. I built my first one at age 5 or so, and now that I'm nearing ten times that age, I'm still building flashlights. This time the project of choice was a high power LED flashlight with several interesting features: - It uses a Cree X-lamp high power LED; - It drives the LED at two power levels; - The LED current is regulated; - It uses rechargeable AA batte ...

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