Parallel Resonant Circuit Frequency. At resonance both capacitive and inductive reactance will be equal to each other. The value of inductive reactance xl 2πfl and capacitive reactance xc 1 2πfc can be changed by changing the supply frequency.
After about a page of algebra the above expression emerges. The value of inductive reactance xl 2πfl and capacitive reactance xc 1 2πfc can be changed by changing the supply frequency. Calculation of resonant resonance frequency of lc circuit connected in parallel is made easier here.
As a parallel resonance circuit only functions on resonant frequency this type of circuit is also known as a rejecter circuit because at resonance the impedance of the circuit is at its maximum thereby suppressing or rejecting the current whose frequency is equal to its resonant frequency.
F r 1 2π lc but that s where the similarities end. In the figure above the 100 impedance point is 500 ω. As a result there is a decrease in the magnitude of current i 2 and this i 2 current lags behind the voltage v. The inductor and capacitor will also be conducting more current at the resonant frequency.
