Electronic Circuits and Tutorials
Electronics Schematics - N

Passive Notch Filters Circuits

Basic Introduction to Filters: Active, Passive & Switched-Capacitor - National Semiconductor Application Note  (app note)

Notch RC Notch Filter Twin T - The twin T notch filter can be used block an unwanted frequency or if placed around an op-amp as a bandpass filter. The notch frequency occurs where the capacitive reactance equals the resistance Xc=R and if the values are close, the attenuation can be very high and the notch frequency virtually eliminated. (electronic schematic / circuit)

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