Define Resonant Frequency Of A Circuit

The resonant frequency condition arises in the series circuit when the inductive reactance is equal to the capacitive reactance.

Define resonant frequency of a circuit.

The frequency or frequencies that achieve the maximum amplitude are known as the resonant frequencies. Since the circuit is at resonance the impedance is equal to the resistor. The resonant frequency for a rlc circuit is calculated from equation 15 6 5 which comes from a balance between the reactances of the capacitor and the inductor. The imaginary part of s gives rise to sinusoidal shaped resonances and the real part of s gives rise to exponentially falling shaped resonances.

If the supply frequency is changed the value of x l 2πfl and x c 1 2πfc is also changed. The circuit can act as an electrical resonator an electrical analogue of a tuning fork storing energy oscillating at the circuit s resonant frequency. At these frequencies forces with a relatively low period can cause sizeable oscillations. Then the peak current is calculated by the voltage divided by the resistance.

An lc circuit also called a resonant circuit tank circuit or tuned circuit is an electric circuit consisting of an inductor represented by the letter l and a capacitor represented by the letter c connected together. Engineers call s the resonant frequency of the circuit. Resonance is a physical reaction in a vibrating system whereby certain frequencies elicit oscillation at a higher amplitude than normal. Lc circuits are used either for generating signals at a particular frequency or picking out a signal at a.

A is called the amplitude of the resonance and s is called the frequency of the resonance. When the frequency increases the value of x l increases whereas the value of x c decreases.