What are the applications of Varactor diode?

Applications:

There are some important applications of varactor diode which are given below,

• The varactor diode is used in electronics tuners in radio, television and other commercial receivers.
• The varactor diode is used in low noise parametric amplifiers, frequency generators and frequency converters or mixers.
• It is used in automatic frequency control device.
• It is used in self balancing bridge circuits.
• It is used as a voltage variable capacitor.
• It is used in adjustable band pass filters.
• It is used in variable resonant tank LC circuit. Here C part is varied using varactor diode.