RLC Circuit Calculator
Calculate f₀, Q, ζ, and bandwidth for series RLC
How to Use This Calculator
1
Enter R, L, C
Provide resistance (Ω), inductance in mH, and capacitance in nF.
2
Calculate
Click Calculate to get resonance, damping, Q, and bandwidth.
3
Interpret Results
Higher Q = narrower bandwidth; ζ < 1 is underdamped (resonant peak).
Formula
ω₀ = 1 / √(LC), f₀ = ω₀ / (2π)
ζ = R/2 × √(C/L), Q = 1/(2ζ), BW ≈ f₀/Q
Series RLC relationships are shown; parallel forms differ in Q definition but share f₀.
About RLC Circuits
RLC networks are used for filtering, tuning, and transient shaping. Resistance damps oscillations and sets selectivity through Q and bandwidth.
Frequently Asked Questions
Is this series or parallel RLC?
Calculations use the series RLC model for ζ, Q, and BW; f₀ applies to both.
How accurate is BW ≈ f₀/Q?
It is a common approximation for lightly damped systems (high Q). For low Q, use full transfer-function analysis.