Threshold instabilities in nonlinear self-excited oscillators
- 1 August 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 14 (2) , 833-839
- https://doi.org/10.1103/physreva.14.833
Abstract
We present the results of a systematic study of threshold instabilities in a Wien bridge oscillator. The dynamical circuit equations can be cast into a time-dependent Ginzburg-Landau form where the order parameter is the complex zero-dimensional amplitude of the oscillatory voltage. In this context we have been able to simulate behavior which in classical theory is characteristic of first-order, second-order, and tricritical phase transitions, and have measured the associated threshold properties.Keywords
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