Inductors Formulas
Inductor formulas govern stored magnetic energy, reactance, and the transient response of RL circuits. These calculators let you size inductors for filters, converters, and energy storage, and predict how current ramps over time. They are indispensable when designing switching regulators and EMI suppression networks.
Inductors Formula Calculators
- Inductive Reactance XL = 2πfL
- RL Time Constant τ = L / R
- Inductor Energy E = ½LI²
- Series Inductance Ltotal = L1 + L2 + ... + Ln
- Parallel Inductance 1/Ltotal = 1/L1 + 1/L2 + ... + 1/Ln
- Inductor Quality Factor Q = 2πfL / Rdc
- Inductor Peak Current Check Ipeak = Idc + V × Δt / (2 × L)
- Mutual Inductance M = k × √(L1 × L2)
- Inductor DCR Power Loss P = I² × DCR
- Toroid Core Inductance L = AL × N²
- Core Loss (Steinmetz) Pv = K · f^x · B^y
- Inductor Temperature Rise ΔT = Ploss · Rth
- Inductor AC Winding Loss Pac = Iac² · Rac
- Air-Coil Inductance (Wheeler) L = µ0·N²·π·r² / (l + 0.9·r)
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