阻抗匹配计算器 — 公式
## 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.
**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.
计算示例
100 mH inductor with 100 ohm resistance.
- tau = 0.1 / 100 = 0.001 s = 1 ms
- 5 tau = 5 ms to reach steady state