Discover how to make a DIY hand-powered mobile phone charger using simple materials such as two small DC motors and a piece ...
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DIY electromagnetic motor & generator | Simple science project with recycled materials!
Discover how to build a simple electromagnetic motor and generator using everyday materials in this hands-on science ...
This circuit takes advantage of the voltage drop across bridge rectifier diodes to produce a 5-position variable voltage supply to a DC fan or other small DC motor. It is not as efficient as a ...
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