Resonant Circuit Component Calculator

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Resonant Circuit Component Calculator


The component values calculated by the Resonant Circuit Component Calculator are valid for both parallel and series resonant circuits.

Notice that the Q value (i.e. Quality Factor) is the only value that changes between a series resonant circuit and a parallel resonant circuit.

The formulas used by the Resonant Circuit Component Calculator are:

Inductance in Henrys                   L = 1 / (4π2 f2 C)

Capacitance in Farads                  C = 1 / (4π2 f2 L)

Frequency in Hertz                       f = 1 / (2π √LC)

Series Circuit Q                           Q = (1/R)√(L/C)

Parallel Circuit Q                         Q = R√(C/L)

Inductive Reactance                     in ohms XL = 2πfL

Capacitive Reactance in ohms       XC = 1/(2πfC)

Calculated value units are automatically scaled.