Unloaded series RL circuit: low-pass output across R, high-pass across L. Winding resistance and the connected load change the response.
How to use
- Enter the dimensions and electrical values.
- Adjust the assumptions to match your components.
- Read the result and check the technical limits below.
Formula and assumptions
f_c = R/(2πL); τ = L/R; |H_LP| = R/√(R² + (2πfL)²); |H_HP| = 2πfL/√(R² + (2πfL)²).
Calculated example
- Resistance
- 1 kΩ
- L
- 100 mH
- Frequency
- 1 kHz
- Cutoff frequency
- 1.5915 kHz
- Gain
- 0.84673