Second Generation Controlled Current Conveyors (CCCII) and Their Applications - Current Conveyors: Variants, Applications and Hardware Implementations - page 262

a

I 01

X DO-CCCII

I 1 I 1

1 Z+

Z− 2

V 1 V 2

Y

Y

Z Z Y

C

CCCII+

CCCII+

X X

I 03

I 02

b

I 01

X

DO-CCCII

I 1

I 1

1

2

Z+ Z−

V 2

V 1

Y

Y

Z Z Y

C

CCCII+

CCCII+

X

X

I 03

I 02

Fig. 9.18 Floating inductance simulators [ 16 ](a) Positive floating inductor (b) Negative floating
inductor

On the other hand, the Y-matrix for the circuit of Fig. 9.18b is of the same form
as the above but with a negative sign thereby representing a negative floating
inductance of value L eq ¼ CR x1 (R x2 + R x3 ).

Yet another circuit requiring only thee active elements to simulate a lossless
floating inductance was presented by Khan and Zaidi [ 17 ] which employs two
CCCIIs and one voltage buffer as shown in Fig 9.19 .
By straight forward analysis, the Y- matrix of this circuit is found to be:

1
sCR x 1 R x 2

V T
2 I 0 i ,i

1 1

½ ¼ Y where R xi ¼ ¼ 1, 2 ð 9 : 18 Þ

;

11