A New Electronically Controllable Lossy Parallel Inductance Circuit Using Commercially Available ICs LT1228

In this paper, an improved electronically controllable lossy-parallel inductor circuit using two commercially available ICs, LT1228, one capacitor and one resistor is presented. The value of the simulated resistor and inductor can be tuned electronically by adjusting the external DC bias current of the LT1228. The performance of the proposed configuration is also inspected by considering the non-ideal effects of the LT1228. A lag compensator as an application example of the proposed circuit is given to justify the theoretical analysis. PSPICE simulation results and experimental measurements are also carried out to validate the feasibility of the proposed circuit.