Volume 71, Number 5, September 2005
|Page(s)||723 - 729|
|Published online||10 August 2005|
Excitable behavior of an operational amplifier
National Creative Research Initiative Center for Controlling Optical Chaos Pai Chai University - Daejeon 302-735, Korea
2 Department of Physics, Sogang University - Seoul 121-742, Korea
3 Istituto Nazionale di Ottica Applicata - 50125 Firenze, Italy
Accepted: 30 June 2005
We find excitable behavior in an operational amplifier (OPA27). When an output terminal is connected to an inverting input terminal through a resistor and a positive input terminal is connected to the ground, the simple electronic circuit exhibits a transition from a steady state to a relaxation oscillation state through quasi-harmonic and excitable pulsation states as the positive and the negative power supply voltages are varied. The observed distribution of the excitable pulsation intervals shows that the pulsations are phase-locked with the internal quasi-harmonic oscillation.
PACS: 05.45.Ac – Low-dimensional chaos / 84.30.-r – Electronic circuits
© EDP Sciences, 2005
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