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High Q notch filter (LM102)

2015-01-18 10:41  
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This article describes the High Q notch filter (LM102). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components:LM102.

In the circuit shown, Twin-T network connections withLM102in 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.

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