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Description: Mini Maglite LED Conversion Kit Assembly Time: 2 hours Skill Level: Intermediate Designer: Waltx Flashlights are always useful especially if you like to camp like me. Out in the... Read more
The Joule thief is a really fascinating circuit, simple yet very intricate. Basically, it’s a step-up converted in its most elementary expression. I will spare you the theory since there is... Read more