Definition of varactor in English:

varactor

noun

  • A semiconductor diode with a capacitance dependent on the applied voltage.

    • ‘This paper presents a performance evaluation and comparison of three different types of CMOS varactors based on measurements.’
    • ‘They key to understanding how a varactor or varicap diode works is to look at what a capacitor is and what can change the capacitance.’
    • ‘The varactors have been employed in VCO circuits operating at frequencies in excess of 40 GHz.’
    • ‘The most significant use of varactors to date has been as the basic component in parametric amplifiers.’
    • ‘This nonlinearity allows the varactor to be used also as a harmonic generator.’

Origin

1950s: from elements of variable reactor.

Pronunciation:

varactor

/vəˈraktə/