Notch Filter | Electronic Project Circuits

Posts Tagged ‘Notch Filter’

High Q notch filter

In the circuit shown, Twin-T network connections with LM102 in form of High Q notch filter.
Usually, the junction of R3 and C3 to ground, is bootstrapped to the output of the follower.
Because it has a very low impedance,neither the depth nor the frequency of the notch change.
However, Q increases in proportion to the amount of the input feedback signal to the R3 and C3,
the response of the twin-T and the response to the follower input.

Be the first to comment - What do you think? Posted by admin - April 10, 2012 at 6:59 pm

Categories: Oscillator generator, RF-Radio Frequency Tags: Notch Filter, twin t filter

Twin T Notch Filter by TL082

This filter allows you to remove frequency band from a signal. In the example below, we’ll design a 50Hz notch filter. This allows us to remove the 50Hz hum picked up by, say, a microphone cord. Of course, it can be easily designed for 60Hz as well.