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I'm working on an assigment where i'm given an circuit which contains two op-amps and I am told it is a Gyrator circuit that simulates an inductance.

I am required to calculate the values of the resistances and the capacitor in the circuit so that the gyrator has an inductance of 11.11mH and then simulate the circuit (in Electronics Workbench) and show a demonstrator the results..

Only problem is when I simulate the circuit I cant get it to act like an inductor.

I'm not sure if the inductance is between the Vin and Vout (floating?) or between Vin and ground.

The circuit diagram I have posted below shows values for the capacitor and resistors that I calculated from finding an expression for Zin (input impedence). Zin=(R1*R3*R5)/(Zc*R4)

The expression for the inductance that I found was L=(C*R1*R3*R5)/R4

The resistances had to be between 0.1k ohm and 10k ohm and the capacitance between 10pF and 500pF. I just arbitarily chose the values of the resistors and capacitance so the inductance was 11.11mH. Is this OK or is there some other condition which should have been met?

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# Gyrator circuit that simulates an inductance

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