Why do we need resonant circuits in radio communication?

The importance of resonance is that the circuit can either absorb or dissipate the maximum amount of energy at resonance. One practical example is used in a radio receiver. Many the frequencies from different radio stations are impinging on the radio’s antenna at the same time.

Why an RLC circuit is useful in a radio receiver?

RLC circuits have many applications as oscillator circuits. Radio receivers and television sets use them for tuning to select a narrow frequency range from ambient radio waves. An RLC circuit can be used as a band-pass filter, band-stop filter, low-pass filter or high-pass filter.

What are the advantages of series resonant circuit?

The series resonance circuit suppresses harmonics and interference to a large extent. The near sinusoidal wave helps accurate partial discharge of measurements and is also desirable for measuring loss angle and capacitance of insulating materials using Schering Bridge.

What are the applications of series resonance circuit?

Applications of Series Resonance Circuit: They are used for Tuning purpose. (2) Series Resonance circuit also used as Oscillator Circuit. (3) Series resonance circuit is used as a Voltage Amplifier. (4) Series Resonance circuits are used in the communication system for signal processing.

What are the uses of series and parallel resonant circuit?

A series resonant circuit provides voltage magnification. A parallel resonant circuit provides current magnification. A parallel resonant circuit can be used as load impedance in output circuits of RF amplifiers.

What is series resonance circuit?

Series resonance is a resonance condition that usually occurs in series circuits, where the current becomes a maximum for a particular voltage. In series resonance, the current is maximum at resonant frequency. The series resonance current curve increases to a maximum at resonance then decreases as resonance is passed.

What is resonance in RLC series circuit?

Series Resonance The resonance of a series RLC circuit occurs when the inductive and capacitive reactances are equal in magnitude but cancel each other because they are 180 degrees apart in phase. The sharp minimum in impedance which occurs is useful in tuning applications.

For what purpose is series resonant transformer used?

A resonant transformer is a transformer in which one or both windings has a capacitor across it and functions as a tuned circuit. Used at radio frequencies, resonant transformers can function as high Q factor bandpass filters.

What is difference between series and parallel resonance circuit?

The main difference between series and parallel resonance is that series resonance occurs when the arrangement of the components creates the minimum impedance, whereas parallel resonance occurs when the arrangement of components creates the largest impedance.

What are the applications of series resonant circuit?

The experimental application of series resonant circuit is made in receiver circuit of TV and radio so that it can receive the signal of particular frequency for which it is tuned, out of the signals of various frequencies coming from the radio broadcasting centre or TV channel.

What are the effects of the series resonance condition?

The following effects of the series resonance condition are given below At Resonance condition, XL = XC the impedance of the circuit is minimum and is reduced to the resistance of the circuit. i.e Zr = R At the resonance condition, as the impedance of the circuit is minimum, the current in the circuit is maximum. i.e Ir = V/Zr = V/R

How does a resonant circuit block a frequency?

A resonant circuit can be used to “block” (present high impedance toward) a frequency or range of frequencies, thus acting as a sort of frequency “filter” to strain certain frequencies out of a mix of others. In fact, these particular circuits are called filters, and their design constitutes a discipline of study all by itself:

What is tuning or resonant circuit?

Tuning or resonant circuit is used in Tuning radio receivers for picking up the signal of a particular station, at a particular frequency, Tuning or resonant circuit consists of: A capacitor of variable capacitance.