logo

Video encyclopedia

Diode

2:23

What is a Diode? (Interactive!) - Electronics Basics 6

3:37

What is a Zener Diode? - Electronics Basics 15

3:38

Why diode is mandatory in relay?

1:48

YEEK - Diode (Official Video)

3:38

What is a zener diode and how does it work? | Intermediate Electronics

A diode is a two-terminal electronic component that conducts current primarily in one direction ; it has low resistance in one direction, and high 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 common 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 used.
Explore contextually related video stories in a new eye-catching way. Try Combster now!