Calculateur de Temps de Décharge de Condensateur
Calculez le temps de décharge d'un condensateur.
Ω
mH
Cutoff Frequency
15,915.5 Hz
Time Constant (L/R)0.0100 ms
Cutoff Frequency vs Resistance
Formule
## 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.
Exemple Résolu
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
Questions Fréquentes
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.
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