Discover how to make a motor generator using a key in this step-by-step tutorial. Learn the principles of transforming ...

In this hands-on tutorial, discover how to make a generator using a DC motor, transforming mechanical energy into electrical ...

When the lights go out, it’s good to have a backup plan. We explain exactly how a generator works, so you can power your home safely.

That’s enough to throw a substantial spark, powered by nothing but a rechargable battery found in an electric lighter. They can also be cheaper than transformers to a point, since they require ...