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In electronics, an electronic switch is a switch controlled by an active electronic component or device. Without using moving parts, they are called solid state switches , which distinguishes them from mechanical switches.
Switches can be designed to respond to any type of mechanical stimulus: for example, vibration (the trembler switch), tilt, air pressure, fluid level (a float switch), the turning of a key , linear or rotary movement (a limit switch or microswitch), or presence of a magnetic field (the reed switch). Many switches are operated automatically by ...
In telecommunications, an electronic switching system (ESS) is a telephone switch that uses solid-state electronics, such as digital electronics and computerized common control, to interconnect telephone circuits for the purpose of establishing telephone calls.
A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. They serve the same function as an electromechanical relay , but solid-state electronics contain no moving parts and have a longer operational lifetime.
semiconductor switch An electronic power switch with semiconductor valve devices. [ac] semiconductor valve device An electronic valve device which is a semiconductor device. sequential phase control Asymmetrical phase control such that the delay angles are determined according to a given sequence. single converter
Power electronic devices may be used as switches, or as amplifiers. [16] An ideal switch is either open or closed and so dissipates no power; it withstands an applied voltage and passes no current or passes any amount of current with no voltage drop. Semiconductor devices used as switches can approximate this ideal property and so most power ...