Twin-T Notch Filter

Design from specification

Passive twin-T notch: f₀ = 1/(2π·R·C), fixed Q = 0.25. Set the notch frequency; R is computed and rounded to the chosen E-series (the bridge uses R, R, R/2 and C, C, 2C).

Notch f₀ [Hz]: C [F] (optional): R series: C series:

Components (analyse / override)

R [Ω]: C [F]:

Results

Components: R = — C = —

Notch f₀ = — Hz Q = — ζ = — gain = —

Transfer function:
H(s) = —

Equivalent block diagram

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Poles

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Phase margin

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Oscillation (ringing) frequency

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Overshoot of the step response

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Final value of the step response

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