Vol. IV — Electronics · Tool
Series or parallel R + L + C. Change f, R, L, and C — |Z| and phase update as you type. Xl = 2πfL, Xc = 1/(2πfC).
Inductive reactance Xl = 2πfL rises with frequency; capacitive reactance Xc = 1/(2πfC) falls. Net reactance for series is X = Xl − Xc.
Series: Z = R + jX, so |Z| = √(R² + X²) and phase φ = atan2(X, R). Parallel: work in admittance Y = 1/R + j(1/Xc − 1/Xl), then Z = 1/Y. Leave R, L, or C at zero to drop that branch (open for series L/C with L=0 or C=0 is skipped; parallel R=0 is a short).
Pair with Reactance for single-part X, or LC resonance for f₀. Back to the electronics bench.