A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other. A diode vacuum tube or thermionic diode is a vacuum tube with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from cathode to plate. A semiconductor diode, the most commonly used type today, is a crystalline piece of semiconductor material with a p–n junction connected to two electrical terminals. Semiconductor diodes were the first semiconductor electronic devices. The discovery of asymmetric electrical conduction across the contact between a crystalline mineral and a metal was made by German physicist Ferdinand Braun in 1874. Today, most diodes are made of silicon, but other materials such as gallium arsenide and germanium are also used.
“The Cockcroft–Walton generator, or multiplier, is an electric circuit that generates a high DC voltage from a low-voltage AC or pulsing DC. The Cockcroft–Walton generator, or multiplier, is an electric circuit that generates a high DC voltage from …
“This time I share with you an easy STEM project to show the kids how a solar cell works. This little device collects clean renewable energy in the form of sunlight and convert that light into electricity which can then …