Linear motors are becoming increasingly practical for general motion. Many are used for long strokes of a few feet or more. One new design, however, where the magnets move relative to a stationary ...

A simple working knowledge of magnets has long been satisfactory to appreciate their interactions. Magnets are made of metal or an alloy that has somehow been magnetized, and they have one north pole ...

Did you know GM invented the domestic, affordable permanent magnet? Before this neodymium-iron-boron magnet came along in 1984, electric motors, generators, audio speakers, hard-disk drives, and the ...

The electric vehicle revolution has created market forces to drive all sorts of innovations. Battery technology has ...

THROUGHOUT history, humans have found ways to make their lives easier. Arguably, the machine that has most eased the burden of work for humans is the electric motor – a device that transforms ...

We recently published an article on the Power Electronics with the headline, “Unique Motor Uses Only Permanent Magnets – No Electric Power Required.” We received a firestorm of criticism that this ...

Want to build an electric motor? It’s likely you could find most of the items needed around your house in order to build a simple one. Below is everything you’d need and instructions on how to make it ...

A number of readers questioned the veracity of the technology presented in this article. To address their concerns, we did a follow-up, which can be found here. Permanent magnets are an integral part ...