Structural analysis of a one-port formed by a resistively coupled nonlinear ring

By opening the capacitors of a dynamic 1-dimensional (1D) ring, constituted by dynamic nonlinear cells coupled by linear resistors, we obtained the associated resistive ring. Aim of this paper is to study the structural properties of the one-port defined by soldering iron entry two appropriate terminals to the associated resistive rings. The related v-i characteristic presents an interesting behavior when a linear resistance of the ring, acting as a parameter, varies, showing that the one-port becomes structurally unstable for a particular value of this parameter.