68. Band-Stop Filters

This filter covers band stop filters. These filters attenuate a band or narrow sliver of frequencies while passing those around this notch. We look at two types of filters, the twin-t and the multi-feedback band-reject filter, crunch the numbers and breadboard the circuit to test the validity of the theory.
There is an error in the formula for calculating R1. The calculation should be:
Q/(2*pi*Fo*Ao*C)
The answer is correct but I left C out.

[@alibehrouz9833]

you know this subject is too hard make mistaking is common I think but I appreciate nice job my dear teacher

[@muhammadjamali5746]

Could you please send me the circuit

[@Anja6652]

which oamp do u use

[@rakesharigela7337]

Is all are acts as band stop filters