Translation and analysis of words by artificial intelligence
On this page you can get a detailed analysis of a word or phrase, produced by the best artificial intelligence technology to date:
- how the word is used
- frequency of use
- it is used more often in oral or written speech
- word translation options
- usage examples (several phrases with translation)
- etymology
What (who) is voltage-dependent resistor - definition
![Traditional varistor schematic symbol,American National Standard,''Graphic Symbols for Electrical and Electronics Diagrams'', ANSI Y32.2-1975 p.27 used today for the [[diac]]. It expresses the diode-like behavior in both directions of current flow.](https://commons.wikimedia.org/wiki/Special:FilePath/Diac.svg?width=200 "Traditional varistor schematic symbol,American National Standard,''Graphic Symbols for Electrical and Electronics Diagrams'', ANSI Y32.2-1975 p.27 used today for the [[diac]]. It expresses the diode-like behavior in both directions of current flow.")
Wikipedia
A varistor is an electronic component with an electrical resistance that varies with the applied voltage. Also known as a voltage-dependent resistor (VDR), it has a nonlinear, non-ohmic current–voltage characteristic that is similar to that of a diode. Unlike a diode however, it has the same characteristic for both directions of traversing current. Traditionally, varistors were indeed constructed by connecting two rectifiers, such as the copper-oxide or germanium-oxide rectifier in antiparallel configuration. At low voltage the varistor has a high electrical resistance which decreases as the voltage is raised. Modern varistors are primarily based on sintered ceramic metal-oxide materials which exhibit directional behavior only on a microscopic scale. This type is commonly known as the metal-oxide varistor (MOV).
Varistors are used as control or compensation elements in circuits either to provide optimal operating conditions or to protect against excessive transient voltages. When used as protection devices, they shunt the current created by the excessive voltage away from sensitive components when triggered.
The name varistor is a portmanteau of varying resistor. The term is only used for non-ohmic varying resistors. Variable resistors, such as the potentiometer and the rheostat, have ohmic characteristics.
