RL transient and stored energy
Current rise or decay with an explicit interruption time for flyback-voltage estimation.
Development preview. Check the assumptions below before relying on a result. Calculations run in your browser.
How it calculates
Model: τ=L/R; I(t)=V/R+(Iinitial−V/R)e^(−t/τ); E=½LI²; |Vflyback|≈L|I|/Δt
Assumptions
- Flyback estimate assumes a linear current fall over the entered time. An ideal open circuit has no finite defined flyback voltage; parasitics and clamps determine it.
Worked example
These are the calculator's default inputs. Change any input above to recalculate.
Inputs
- Series resistance
- 10 Ω
- Inductance
- 0.1 H
- Applied voltage after step
- 12 V
- Initial current
- 0 A
- Evaluation time
- 0.01 s
- Assumed current fall time
- 0.000001 s
Results
- Current at time
- 0.758545 A
- Stored energy
- 0.0287695 J
- Time constant
- 0.01 s
- Induced interruption magnitude
- 75854.5 V