Calculadora de Constante de Tempo do Indutor
Calcule a constante de tempo L/R de um circuito RL para análise de transitórios.
mH
Ω
Constante de Tempo (tau)
0.001000 s
Time Constant (ms)1.000 ms
Settling Time (5 tau)5.000 ms
Time Constant (tau) vs Inductance
Formula
## RL Time Constant **tau = L / R** Current in an RL circuit rises to 63.2% of final value in one tau. After 5 tau, current is at ~99.3% of steady state.
Exemplo Resolvido
100 mH inductor with 100 ohm resistance.
- 01tau = 0.1 / 100 = 0.001 s = 1 ms
- 025 tau = 5 ms to reach steady state
Perguntas Frequentes
Why L/R and not LR?
Units: henrys/ohms = seconds. The inductor opposes current change; higher R dissipates energy faster.
RL vs RC time constant?
RC = R x C. RL = L / R. Both describe exponential approach to steady state.
What is 5 tau?
After 5 time constants, the circuit is within 0.7% of final value, considered fully settled.
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