Chua’s oscillator driven by an external current source is studied. Our experimental study reveals the following rich variety of interesting bifurcation phenomena: (a) period adding; (b) frequency entrainment of chaos; (c) torus breakdown to chaos; (d) chaotic attractors with strange geometrical patterns; (e) regularity of periodic windows; (f) coexistence of multiple attractors; (g) period-preserving bifurcations; (h) large-sized chaotic attractors; (i) intermittent behavior. Furthermore, some interesting applications of the forced Chua’s oscillators are suggested.
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