pole & zero

[zxcv2201]

When I learned about pole and zero, I knew that they were calculated using Rin, Rout, Cin, and Cout values.

1/(Rin*Cin) 1/(Rout*Cout)

I know that it can be easily obtained using the formula above. However, I don't understand how the pole and zero in the picture are obtained.

Is there a simple way to find pole and zero in a slightly more complex form as shown in the picture?

 

[danadakk]

The easy method is to use signal flow graph analysis :

3.2: Signal Flow Graph

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GitHub - mtarek97/Signal-Flow-Graph-Solver: A signal flow graph solver made entirely in javascript

A signal flow graph solver made entirely in javascript - mtarek97/Signal-Flow-Graph-Solver

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Regards, Dana.

 

[andre_luis]

The analysis of the operational amplifier's transfer function follows the same script: Determine the nodes of the input branch and the output branch, and then divide the voltage drop of both (Vo - V_- )/(V_-- Vi ). At the end it is pure algebraic manipulation.

 

[danadakk]

Once you get the T(s), via algebra or SFG :

(Sample) Transfer Function Analysis and Design Tool - Result -

Regards, Dana.