RL Time Constant Calculator

How RL Time Constant works

For RL Time Constant, use τ = L ÷ R. RL Time Constant uses Inductance, Resistance to report RL time constant. Use Inductor Energy Calculator.

With the loaded values, rL time constant evaluates to 0.02 s. Test inductance separately and preserve the baseline rl time constant.

Inputs for RL Time Constant

Inductance and Resistance belong to RL Time Constant. Keep source units with inductance.

The RL Time Constant defaults demonstrate arithmetic only. Replace inductance with case-specific data.

Inductance

Example entry: 0.2 H.

Resistance

Example entry: 10 Ω.

Reading the RL Time Constant result

This output represents RL Time Constant.

Before selecting equipment for RL Time Constant, compare rl time constant with available ratings and operating limits.

Measurement and units

Use component tolerances, voltage ratings, current limits, frequency behavior, and thermal data from the selected parts. Check prefixes on inductance.

Keep the inductance unit and measurement point consistent across RL Time Constant cases.

Limits of this calculation

Include winding and source resistance. Compare this result with Series Capacitor Calculator when equivalent capacitance is also needed.

Only the listed RL Time Constant inputs contribute to rl time constant. Unentered effects remain outside RL Time Constant.

RL Time Constant record notes

Record source and operating details for inductance. For diode loss, use Diode Power Dissipation Calculator.

Retain raw rl time constant beside its selected rating.

Questions about RL Time Constant