Tunable Notch Filter PUBLIC

Active Notch Filter with Tunable Notch Frequency

Active notch filter using op-amps. Features tunable notch frequency, adjustable notch bandwidth, and adjustable notch depth. Part-values fixed. Results of different control settings given with the diagram. Useful for providing control of a hump or peak in an op-amp circuit's frequency response curve. Power-supply not shown. Requires a regulated dual-polarity DC supply providing +-9VDC or +-12VDC or +-15VDC at >= 20 mA of current. Breadboard test before committing to a soldered build.