Friday, 10 May 2013

Special purpose diodes

Varactor diode:
It is also called as VARICAP.
It is a semiconductor device that behaves like a variable capacitor. when reverse biased it has a capacitance that varies with an applied voltage.

Applications:

  • commonly found in communication equipments where electronic tuning is necessity.
  • An important component of radio frequency or RF applications.
  • Found in radios, FM receivers, televisions and microwaves.

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