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COLLEGE OF ENGINEERING

PUTRAJAYA CAMPUS

TEST1

SEMESTER 2 2010/ 2011

PROGRAMME : Bachelor of Electrical Power Engineering (Honours)

Bachelor of Electrical and Electronics Engineering (Honours)

SUBJECT CODE : EEEB143

SUBJECT : Electronics Analysis & Design I

DATE : Feb. 2011

TIME :1 hour

Name: ID No.:

Section: A / B

INSTRUCTIONS TO CANDIDATES:

1. This paper contains THREE (3) questions in FOUR (4) pages.

2.

Answer ALL.

3. Write all answers in the answer paper provided.

4.

Write answer to each question on a new page.

TH IS QUESTION PAPER CONSISTS OF 4 PRINTED PAGES INCLUDING THIS

COVER PAGE.

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QUESTION 1

Determine the current I for figure 1 by using the approximation equivalent model for the

diode. Assume V1=20V, Vγ = 0.6V, R 1=20kΩ & R 2=10kΩ .

12V

Figure 1

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QUESTION 2

Figure 2 shows a Zener diode circuit. The Zener break-down voltage is Vzo = 5.6V (diode

voltage when Iz ~0mA), and the incremental zener resistance is r z = 3Ω, R i = 50 k Ω

and R L= Determine VL, IZ IL and Pz.

Figure 2

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QUESTION 3

Consider the circuit shown in Figure 3. The range for input voltage is -10 V1 V in

rectangular wave. Diode cut-in voltage is Vγ = 0.7V and VB = 5V. Sketch the output

voltage, Vo.

Figure 3

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