Report (3)-Term I (1)

8/10/2019 Report (3)-Term I (1)

1/41

Cairo University Prof. Afaf Abdel-FattahFaculty of Engineering Circuits(2) ELC 202 ADepartment of Electronics & Electrical Communications Term (I)

ELECTRIC CIRCUITS

Report (3)

Name: Sec.: B.N.:

Notes:

Answer all questions.

Insert your results in the requested tables and sketches.

Mark

Prof.Afaf Abdel Fattah

Page 1 of 41

8/10/2019 Report (3)-Term I (1)

2/41


Question[1]:a)Determine the O.C. Z-parameters for the network shown in figure and sketch its

Z-parameters equivalent circuits.

b)Calculate the Hybrid H-parameters of the same network and sketch its equivalent

circuit.Insert your results in Table 1 .

+

V1

_

R1

R2 R3

R4

I1 I2

+

_

V2

Page 2 of 41

8/10/2019 Report (3)-Term I (1)

3/41


Page 3 of 41

8/10/2019 Report (3)-Term I (1)

4/41


Page 4 of 41

8/10/2019 Report (3)-Term I (1)

5/41


[Z]

Equivalent

Circuit(1) for

Z-parameters

Equivalent

Circuit(2) for

Z-parameters

[H]

Equivalent

Circuit for

H-parameters

Table 1

Page 5 of 41

8/10/2019 Report (3)-Term I (1)

6/41


Question[2]:Determine the S.C. Y-parameters for the network shown in figure and sketch the two forms

of its equivalent circuit.

Insert your results in Table 2 .

Page 6 of 41

8/10/2019 Report (3)-Term I (1)

7/41


Page 7 of 41

8/10/2019 Report (3)-Term I (1)

8/41


Page 8 of 41

8/10/2019 Report (3)-Term I (1)

9/41


[Y]

Equivalent

Circuit (1) for

Y-parameters

Equivalent

Circuit (2) for

Y-parameters

Table 2

Page 9 of 41

8/10/2019 Report (3)-Term I (1)

10/41


Question[3]:For the Hybrid equivalent circuit shown in figure, calculate the current gain A iand the

voltage gain Av.

Insert your results in Table 3 .

+

_

V1

hi

1 K

+_

hrV2 hfI1

50 I1 40

K

+

I1 I2

_

V2RL

2 K

24

104 V

oh

1

Page 10 of 41

8/10/2019 Report (3)-Term I (1)

11/41


Page 11 of 41

8/10/2019 Report (3)-Term I (1)

12/41


Page 12 of 41

8/10/2019 Report (3)-Term I (1)

13/41


Ai

Av

Table 3

Page 13 of 41

8/10/2019 Report (3)-Term I (1)

14/41


Question[4]:For the Z-parameters equivalent circuit shown in figure, calculate the input and output

impedances.

Insert your results in Table 4.

Rs 1

K

I1

Vg

+

V1

_

+_

+_

Z12I2 Z21I1

Z11

1 K

Z222 K 4 K

+

V2

_

RL1 K

I2

23

90105 Io

1

31010 I

Page 14 of 41

8/10/2019 Report (3)-Term I (1)

15/41


Page 15 of 41

8/10/2019 Report (3)-Term I (1)

16/41


Page 16 of 41

8/10/2019 Report (3)-Term I (1)

17/41


Zin

Zout

Table 4

Page 17 of 41

8/10/2019 Report (3)-Term I (1)

18/41


Question[5]:The Hybrid H-parameters of a network are given by the following matrix:

mho

KH

20100

0002.01

Calculate the H-parameters of two of such network connected in:

a)Series.

b)Parallel.


___________________________

Page 18 of 41

8/10/2019 Report (3)-Term I (1)

19/41


Page 19 of 41

8/10/2019 Report (3)-Term I (1)

20/41


Page 20 of 41

8/10/2019 Report (3)-Term I (1)

21/41


[H]

Series Connection

[H]Parallel Connection

Table 5

Page 21 of 41

8/10/2019 Report (3)-Term I (1)

22/41


Question[6]:Determine the transmission A-parameters for the network shown in figure and write its 2-

port equations in the A-form.


1

1 4 3

1

Page 22 of 41

8/10/2019 Report (3)-Term I (1)

23/41


Page 23 of 41

8/10/2019 Report (3)-Term I (1)

24/41


Page 24 of 41

8/10/2019 Report (3)-Term I (1)

25/41


[A]

Transmission

Equations

Table 6

Page 25 of 41

8/10/2019 Report (3)-Term I (1)

26/41


Question[7]:For the 2-port network shown in figure, find the transmission A-parameters.


+

_

V1

I1

50

100

+_

20

0.025 V1

40

+

V2

_

I2

5 V2

Page 26 of 41

8/10/2019 Report (3)-Term I (1)

27/41


Page 27 of 41

8/10/2019 Report (3)-Term I (1)

28/41


Page 28 of 41

8/10/2019 Report (3)-Term I (1)

29/41


[A]

Table 7

Page 29 of 41

8/10/2019 Report (3)-Term I (1)

30/41


Question[8]:Simplify the network shown in figure into two 2-port networks connected in parallel.

Hence, calculate the Y-parameters matrix of the whole network.


Page 30 of 41

8/10/2019 Report (3)-Term I (1)

31/41


Page 31 of 41

8/10/2019 Report (3)-Term I (1)

32/41


Page 32 of 41

8/10/2019 Report (3)-Term I (1)

33/41


Table 8

[Y]

Page 33 of 41

8/10/2019 Report (3)-Term I (1)

34/41


Question[9]:Using the Z-parameters, find Thevenins equivalent circuit with respect to port 2 for the

2-port network shown in figure.


Zg

Vg

+

_

+

V1_

I1 I2

+

V2_

ZL

Page 34 of 41

8/10/2019 Report (3)-Term I (1)

35/41


Page 35 of 41

8/10/2019 Report (3)-Term I (1)

36/41


Page 36 of 41

8/10/2019 Report (3)-Term I (1)

37/41


Vth

Zth

Equiv. Cct.

Table 9

Page 37 of 41

8/10/2019 Report (3)-Term I (1)

38/41


Question[10]:The networks D and E in the circuit shown in figure are reciprocal and symmetrical

networks. D has a11=5 and a12=24 . The impedance ZL is adjusted for maximum

average power transfer. FindZLif Zg=5 .


Page 38 of 41

8/10/2019 Report (3)-Term I (1)

39/41


Page 39 of 41

8/10/2019 Report (3)-Term I (1)

40/41


Page 40 of 41

8/10/2019 Report (3)-Term I (1)

41/41


ZL

Documents

Report (3)-Term I (1)