RC / RL / RLC

Hora constants, cutoff f_c, resonance, Q, damping

About this tool

First- and second-order linear-circuit characterizations.

RC and RL

  • RC: τ = R·C, cutoff f_c = 1/(2πRC).
  • RL: τ = L/R, cutoff f_c = R/(2πL).
  • 5τ settles to ~0.7 % of final.

Series RLC

  • Resonance ω₀ = 1/√(LC), f₀ = ω₀/(2π).
  • Q = (1/R)√(L/C); damping ζ = R/2 · √(C/L); bandwidth Δf = f₀/Q.
  • Reports underdamped / critically damped / overdamped regime.