All About Circuits is a website that “provides a series of online textbooks covering electricity and electronics.” Written by Tony R. Kuphaldt, the textbooks available here are wonderful resources for students, teachers,...

All About Circuits is a website that “provides a series of online textbooks covering electricity and electronics.” Written by Tony R. Kuphaldt, the textbooks available here are wonderful resources for students, teachers,...

Written by Tony R. Kuphaldt, this chapter of All About Circuit's third volume on Semiconductors describes the physics behind diodes and rectifiers. The chapter is divided into fourteen sections on topics including diode...

These pages, authored and curated by David P. Stern, describe a dynamo process that creates the magnetic fields of the Earth and the Sun. Flows of electrically conducting material through existing magnetic fields...

This site from the Exploratorium provides a simple demonstration of the interaction between a moving magnet and its induced electromagnetic field. As the magnet is dropped down a metallic tube, it induces eddy currents...