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In this work, we show that a pinched-loop can be observed in thevoltage-current plane when a series R-L circuit is current excited.Specifically, the resistance (R) in this circuit is variable and isvoltage-controlled by the voltage developed across the inductor due to theexciting current. In this context, we confirm our previous results that thepinched-loop is not a characteristic of memrsitors or memrsitive systems andthat it can be observed in many other nonlinear systems. Numerical simulations,circuit simulations and experimental results validate the theory.

Observation of a Pinched-Loop in a Current-Excited Inductive Circuit