RL Filter Cutoff Rechner
Berechnen Sie RL filter cutoff frequency aus resistance und inductance.
Ω
mH
Cutoff Frequency
15,915.5 Hz
Time Constant (L/R)0.0100 ms
Cutoff Frequency vs Resistance
Formel
## RL Filter Cutoff **f_c = R / (2 x pi x L)** Time constant tau = L/R. An RL low-pass passes DC and attenuates high frequencies.
Lösungsbeispiel
R = 1k, L = 10 mH.
- 01L = 0.01 H
- 02f_c = 1000 / (2pi x 0.01) = 15,915.5 Hz
- 03tau = 0.01 / 1000 = 0.01 ms
Häufig Gestellte Fragen
RL vs RC filter?
Same rolloff rate (-20 dB/decade), but RL uses an inductor where RC uses a capacitor.
Why use RL over RC?
RL filters handle DC current better. Useful in power supply filtering.
Inductor disadvantages?
Inductors are larger, heavier, and more expensive than capacitors for most filter applications.
Lernen