Nonlinear Applications of CCs - Current Conveyors: Variants, Applications and Hardware Implementations - page 243

a

1 1

Y Y

Y

CCII− CCII−

Z CCII− Z 1

Z

X X

X

R 4

R 5

R 6

R 1 R 3

R 2 C 3

C 2

C 1

D

L

5uA

b

0A

−5uA

−10uA
−700mV −400mV 0V

V(C3:2)

400mV 750mV

I (L)

Fig. 8.31 A three phase oscillator converted into a chaotic oscillator using diode inductor
composite proposed by Elwakil and Kennedy (Adapted from [ 14 ] 1991 Elsevier Science Ltd.)

©

(a) The circuit (b) PSPICE generated V c3 -I L trajectory

biasing supply for CCII 9 V. The circuit (Fig. 8.31b ) was tuned to

obtain different trajectories by adjusting R z to different values. The authors have
claimed that using the same technique multiphase oscillators such as six phase
oscillators can also be converted into chaotic oscillators.
Petrzela and Slezak in [ 18 ] demonstrated that several novel oscillators consisting
of only five CCII+ s can be devised to generate conservative chaotic attractors. In
fact they presented a class of autonomous deterministic dynamical systems with

taken as