Notch Filter Calculator
Calculate the notch (rejection) frequency of a parallel LC notch filter.
mH
nF
Notch Frequency
50,329 Hz
Notch Frequency vs Inductance
Notch (Band-Reject) Filter
f_notch = 1 / (2pi x sqrt(LC))
A notch filter rejects a narrow band of frequencies while passing all others. The rejection frequency uses the same LC resonance formula.
Example Calculation
L=1 mH, C=10 nF to reject interference.
- 01f_notch = 1 / (2pi x sqrt(0.001 x 1e-8))
- 02f_notch = 50,329 Hz
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