Coherence resonance in an unijunction transistor relaxation oscillator

Details Coherence resonance in an unijunction transistor relaxation oscillator Coherence resonance in an unijunction transistor relaxation oscillator

2009-02-02

arxiv.org/abs/0902.0242v2

Phys. Rev. E 80, 015201(R) (2009)

Nonlinear Sciences

Chaotic Dynamics

4 pages, Coherence resonace, Uni junction relaxation oscillator

Scientific paper

10.1103/PhysRevE.80.015201

The phenomenon of coherence resonance (CR) is investigated in an unijunction transistor relaxation oscillator (UJT-RO) and quantified by estimating the normal variance (NV). Depending upon the measuring points two types of NV curves have been obtained. We have observed that the degradations in coherency at higher noise amplitudes in our system is probably the result of direct interference of coherent oscillations and the stochastic perturbation. Degradation of coherency may be minimal if this direct interference of noise and coherent oscillations is eliminated.

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