Dynamical behaviour of a new model for the UJT relaxation oscillator

Year: 2024

Authors: Febbe D., Mannella R., Meucci R., Di Garbo A.

Autors Affiliation: Univ Pisa, Dept Phys, Pisa, Italy; CNR, CNR, Inst Biophys, Pisa, Italy; Univ Firenze, Phys & Astron Dept, Florence, Italy; CNR, Natl Inst Opt, INO, Florence, Italy.

Abstract: We propose a new two dimensional model for the UJT (Unipolar Junction Transistor) relaxation oscillator whose parameters were chosen by fitting the experimental data. The dynamical properties of the model were studied by using nonlinear dynamics methods and it was proved that self -sustained oscillations may occur. Then, the system was forced to study the transition to chaos, reproducing the torus breakdown mechanism observed experimentally. Finally, two identical systems were diffusively coupled and the synchronization properties have been studied.

Journal/Review: CHAOS SOLITONS & FRACTALS

Volume: 183      Pages from: 114906-1  to: 114906-15

KeyWords: Relaxation oscillator; Uni junction transistor; Chaos; Torus breakdown; Synchronization
DOI: 10.1016/j.chaos.2024.114906

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