In the TV receivers, the device used for tuning the receiver to the incoming signal is

In the TV receivers, the device used for tuning the receiver to the incoming signal is

a.) Varactor diode
b.) High pass Filter
c.) Zener diode
d.) Low pass filter

Correct Answer: Varactor diode

Explanation:

Varactor diodes have variable capacitance as a function of variable input voltage. Varactor diodes work in reverse-bias. They are used for tuning the receivers according to incoming signal. Varactor diodes are used in voltage controlled oscillators and in almost all radio, cellular and wireless receivers. They are also used in RF filters for tuning purposes such as tuning of television sets to electronically tune the receiver to different stations.