Silva, J. P.Silvestre, António Jorge2012-09-102012-09-102008-05Silva J P, Silvestre A J. Surprises of the transformer as a coupled oscillator system. European Journal of Physics. ISSN · 0143-0807. 2008: 29 (3), 413-420.0143-0807http://hdl.handle.net/10400.21/1763We study a system of two RLC oscillators coupled through a variable mutual inductance. The system is interesting because it exhibits some peculiar features of coupled oscillators: (i) there are two natural frequencies; (ii) in general, the resonant frequencies do not coincide with the natural frequencies; (iii) the resonant frequencies of both oscillators differ; (iv) for certain choices of parameters, there is only one resonant frequency, instead of the two expected.engTransformerCoupled oscillator systemjournal article