A useful guide to understanding voltage, current, and resistance.
Infographic: Electricity A visual cheat sheet about electrical physics, containing the most important formulas of current and Ohm’s law expressed through an impossible water circuit analogy. (by Pierluigi Scotolati)
The Trio LT : a product that combines a high quality LED to a unique lighting design
A Homemade Variable Tuning Capacitor for tuning in your FM stations...