A Wien-bridge-based circuit generating chaotic oscillations has been d
esigned and investigated both numerically and experimentally. The osci
llator contains an operational amplifier, a Wien-bridge used as a reso
nance loop, an additional RC inertial circuit, and a comparator employ
ed as a nonlinear device. The waveforms and the Lyapunov exponents are
presented. The synchronisation properties have been investigated.