A new oscillator scheme for analog modeling

In this paper, a new nonlinear oscillator is analysed and the design of an analogue circuit implementation of it is discussed. The dynamical behaviour of the mathematical model is studied applying the harmonic balance principle and deriving the condition on system parameters necessary to observe stable nonlinear oscillations. The corresponding circuit has been designed taking into account and exploiting the non-ideal characteristics of both passive and active circuit components. The oscillations produced by the circuit have been characterized by varying a single parameter. Finally, the importance of the proposed system for in representing physical phenomena occurring in fusion plasmas is stressed, opening the way for the definition of a new strategy for improving plasma instabilities models.

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