varactor

Definitions

Electronics

• A pn-junction diode operated with reverse bias, so that it functions as a voltage-dependent capacitor. The p and n regions each act as the plates, with the depletion layer serving as the dielectric. Its capacitance varies as a function of its applied voltage, and is used, for instance, for electronic tuning. It is an acronym for variable reactor. Also called varactor diode, varicap, varicap diode, variable-capacitance diode, or voltage-variable capacitor.
• synonymvariable reactor
• synonymvariable-capacitance diode
• synonymvaricap
• synonymvaricap diode
• synonymvoltage-variable capacitor

Nearby Definitions of “varactor”

• vapour barrier
• vapour degreasing
• vapour deposition
• vapour lock
• var
• varactor
• varder
• variable
• variable bit rate
• variable-carrier modulation
• variable costs

Contexts for “varactor”

6 definitions in context
• Electronics