RL时间常数计算器 — 公式
## RL Time Constant
The RL time constant governs how quickly current builds up or decays in an inductor-resistor circuit.
### Formula
**τ = L / R**
After one time constant, the current reaches 63.2% of its final steady-state value.
The RL time constant governs how quickly current builds up or decays in an inductor-resistor circuit.
### Formula
**τ = L / R**
After one time constant, the current reaches 63.2% of its final steady-state value.
计算示例
A 50 mH inductor with a 10 Ω resistor.
- τ = L / R
- τ = 50e-3 / 10
- τ = 0.005 s = 5 ms