Eur. Phys. J. Special Topics 222, 917-926 (2013)
https://doi.org/10.1140/epjst/e2013-01894-y

Regular Article

Observation of phase-flip transition in delay-coupled Nishio-Inaba circuits

School of Physics, Bharathidasan University, Palkalaiperur Campus, Tiruchirapalli 620024, Tamilnadu, India

^a e-mail: akila@cnld.bdu.ac.in
^b e-mail: anand@cnld.bdu.ac.in

Received: 22 March 2013
Revised: 3 May 2013
Published online: 11 July 2013

Abstract

We examine the dynamics of two time-delay coupled Nishio-Inaba circuits exhibiting limit-cycle motion. By numerically solving the governing delay-differential equations, we show that the delay coupled Nishio-Inaba circuits undergo a phase-flip transition. Our results reveal that depending on the strength of coupling and the amount of time-delay, the relative phase between the oscillators changes from in-phase to anti-phase and vice versa, and the pattern repeats with increasing delay. We also verify our numerical predictions using OrCAD PSpice circuit simulation.