Sallen-Key low pass filter

 
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Overview

This is a second order active filter which is well known for its simplicity. It contains a unity gain amplifier and has a high Q factor. It is highly preferred to be used in AM receivers, where a low pass filter is required to remove the high frequency components. The carrier and modulated wave are mixed so that the signal can be separated with the help of the low pass filter.

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Created on: 01 Jan 2013
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