LC Resonance Circuit Calculator

Calculate L and C

LC Resonant Circuit Calculator

This calculator determines the values of inductance ($L$) and capacitance ($C$) for an LC resonant circuit with specified source and load resistances. Given inputs such as the resonant frequency ($f_r$), quality factor ($Q$), source impedance ($R_s$), and load impedance ($R_l$), the calculator first computes the parallel resistance ($R_p$) using $R_p = \frac{R_s \times R_l}{R_s + R_l}$. The parallel reactance ($X_p$) is then calculated as $X_p = \frac{R_p}{Q}$. Finally, the inductance and capacitance are found using $L = \frac{X_p}{2 \pi f_r}$ and $C = \frac{1}{2 \pi f_r X$

Some example usage of this online LC parallel resonant circuit calculator are as follows.

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