Kalomiros, J. A.Stavrinides, S. G.Miliou, A. N.Antoniades, I. P.Magafas, L.Anagnostopoulos, A. N.2015-06-252024-09-272015-06-252024-09-272009-041468-1218http://www.sciencedirect.com/science/article/pii/S1468121807002143https://repository2024.ihu.gr/handle/123456789/1492The nonlinear behaviour of an R–L-Varactor circuit, simulated by Multisim 7.0 at a driving frequency that is below the circuit resonance frequency, is reported and evaluated. A new high amplitude oscillation is observed and attributed to the emergence of a large diode junction capacitance. Increasing the driving signal amplitude, the circuit is led to a non-periodic mode of operation, producing trajectories of increasing chaotic content in a four-dimensional phase space. At specific amplitudes a two-dimensional tori was monitored, where trajectories are periodic, like in a two oscillator system with commensurate frequencies. Poincaré cross-sections, FFT spectra and correlation dimension calculations, suggest the quasi-periodicity route to chaos.11enAttribution-NonCommercial-NoDerivatives 4.0 Διεθνέςhttp://creativecommons.org/licenses/by-nc-nd/4.0/Άρθρο σε επιστημονικό περιοδικό10.1016/j.nonrwa.2007.10.023ChaosChaotic circuitsNonlinear circuitsR-L-Varactor circuit