Abstract
Simulation of grounded inductance (GI) and Floating inductance (FI) has been an important area of analog circuit research since simulated inductors find applications in a number of analog circuit designs.Inductance simulation circuits using current conveyors(CCs) and current feedback operational amplifiers (CFOAs)have attracted significant attention in recent literature due to the commercial availability of a CFOA with externally accessible z-pin such as AD 844 which can be used to realize both CC-based as well as CFOA-based inductance simulators practically. In this paper a new configuration for the simulation of a floating inductance (FI) employing only two CFOAs is presented. The proposed circuit employs a canonical number of passive components and (namely, only two resistors and a capacitor), and realizes a single resistance-tunable inductance value, does not require any component-matching or cancellation constraints in the realization of the intended type of inductance. To the best knowledge of the authors, no such CFOA-based FI circuit has been reported in the literature earlier. The proposed circuit has been tested by its hardware implementation and SPICE simulations based on AD844-type CFOAs which confirm its practical workability.
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