a crystal diode used as a rectifier.

(a) A thermionic valve of the simplest kind with just two electrodes, a cathode or ‘filament’ and an anode or ‘plate’. (b) semiconductor diode n. at…

A semiconductor diode whose electrical resistance varies non-linearly with the applied voltage.

A semiconductor diode which generates a potential difference when illuminated, or whose electrical resistance depends on the degree of illumination.

a semiconductor diode, esp. one comprising a semiconductor crystal with which a thin metal wire is in point contact; also called crystal rectifier.

= junction diode n.

a diode consisting essentially of a piece of semiconductor containing a rectifying p-n junction.

a type of semiconductor diode used for voltage regulation, in which, at a well-defined reverse voltage, the electrical resistance drops…

A Zener diode.

a two-terminal semiconductor device, consisting of a heavily doped p–n junction, which has negative resistance at low voltage due to…

a semiconductor diode that emits light when a current flows through it; abbreviated LED.

Used attributively to designate concepts and devices invented by Shockley. a semiconductor diode consisting of four regions of alternate…

A light-emitting diode: a semiconductor diode that emits light when a voltage is suitably applied.

Used attributively. a solid-state diode having a metal-semiconductor junction, used in fast switching and voltage-clamping applications.

A light-emitting diode containing thin flexible sheets of an organic electroluminescent material, used for electronic visual displays.