Presenting the Sallen-Key filter topology, an easy to design and analyze active filter that can be adapted to work as any kind of filter, from Low Pass, to High Pass and Band Pass.
This video goes through the theory behind this type of filter and shows a design example of a 2nd order low pass filter.
To better understand the contents of this video it is recommended to first view the previous episodes of the series, especially episode 5, first order high pass filters, which introduces the concepts of transfer functions, poles and zeros:
https://youtu.be/O043gCEHHt8
Happy Experiments!
Link to the tutorials series:
https://www.youtube.com/watch?v=NWeY9smWsmQ&list=PL3SNC7XyKklZmaZnn3TQkYOXXnTN_lO3U
On-line circuit simulator, from PartQuest (Siemens):
https://explore.partquest.com/
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