CSE224L Course Title: Electronics Devices and Circuits Lab

Daffodil International University

Department of Computer Science and Engineering

Lab Manual

Version: 2017.04

Course Code: CSE224L

Course Title: Electronics Devices and Circuits Lab

Table of Contents

Sessions Session Name Pages

1

Introduction to Electronics Devices and Circuits Lab

3

2

Study of Diode Characteristics

4

3

Study of Zener Diode Characteristics

5

4

Study of Half Wave Diode Rectifier Circuit

7

5

Study of Full Wave Diode Rectifier Circuit

9

6

Study of Diode Clipper Circuit

10

7

Study of Diode Clamping Circuit

12

Session 1: Introduction to Electronic Devices and Circuits Lab

Intended Learning Outcome:

a. To develop skills and knowledge in analysis and design of electronic circuits.

b. To design electronic circuits through hands-on laboratory experiments.

c. To build and test electronic circuits.

Expected skills:

a. Knowledge about electronic components b. Experimental skills

Tools Required:

a. Trainer Board b. Signal Generator c. Oscilloscope d. Electronic Devices (i.e resistors, capacitors, inductors)

Session Detail:

Understand the fundamental elements of components and how to operate them.

Post Lab Exercise:

Lab report work will be given and submit it accordingly.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky

3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith

Session 2: Study of Diode Characteristics Intended Learning Outcome:

a. To develop knowledge about p-n junction and Diode.

b. To study the I-V characteristics of silicon p-n junction diodes.

c. To implement and test electronic circuits.

Expected skills:

a. Knowledge about Diode. b. Experimental skills

Tools Required:

p-n junction diode(1N4003) one piece

5V Zener diode one piece

Resistor (1K) one piece

DC power supply one piece

Signal generator one piece Chords and wire

Session Detail:

1. Measure resistance accurately using multimeter. Construct the circuit as shown in Fig. 2.Vary input voltage (

V

dc) and measure

V

D

, V

R for values of

V

D=0.1V, 0.2V, 0.3V, 0.4V, 0.5V, 0.6V, 0.7V and so on.

Obtain maximum value of

V

D without increasing.

V

dc beyond 25 V (Note that

I

D

=V

R/

R

).

(Circuit diagram for diode characteristics.) Fig. 2

+ V

R

1K +

V

D

-

V

dc

2. Plot diode I-V characteristics for different readings obtained in this experiment. Fig. 1(b)

Post Lab Exercise:

Lab report work will be given and submit it accordingly.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky 3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith

Session 3: Study of Zener Diode Characteristics Intended Learning Outcome:

a. To develop knowledge about p-n junction and Zener Diode.

b. To study the I-V characteristics of Zener diodes.

Expected skills:

a. Knowledge about Zener Diode. b. Experimental skills

Tools Required:

p-n junction diode(1N4003) one piece

5V Zener diode one piece

Fig.

Resistor (1K) one piece

Signal generator one piece

Chords and wire

Session Detail:

1. 1. Measure resistance accurately using multimeter. Vary input voltage (

V

dc) and measure

V

R for values of

V

z =0.5V, 1.0V, 1.5V, 2.0V, 2.5V, 3V and so on up to the maximum value obtainable without increasing

V

dc beyond 25V. Apply circuit in Fig. 1 for this step.

2. Plot diode I-V characteristics for different readings obtained in this experiment. Fig. 1(b)

Post Lab Exercise:

Lab report work will be given and submit it accordingly.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky 3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith

Session 4: Study of Half Wave Diode Rectifier Circuit

Intended Learning Outcome:

a. To understand principle of diode in converting ac into dc.

b. To study different diode rectifier circuits.

Expected skills:

a. Knowledge about Rectifier. b. Experimental skills

Tools Required:

Trainer board Multimeter Resistor 10kΩ Capacitor 1µF, 47µF Diode 4 pieces.

Session Detail:

The diode rectifier converts the input sinusoidal voltage

V

s to a unipolar output

V

o. There are two types of rectifier circuits. One of them is Half-wave rectifier.

The circuit of a Half-wave rectifier is shown in Fig. 1.

CIRCUIT DIAGRAM

Fig. 1 Circuit diagram for half wave Rectifier 10V p-p

100

10K

VL Ch2

Ch1

1. Construct circuit of Fig.1 without the capacitor. Observe

V

i and

V

o simultaneously on the

oscilloscope. Sketch input and output waveforms. Measures

V

o with multimeter in dc and ac mode.

2. Connect 1F capacitor across the load resistor. BE CAREFUL about the polarity of the capacitor.

Sketch input and output waveforms. Measure

V

owith multimeter.

Post Lab Exercise:

1. Lab report work will be given and submit it accordingly

2. Draw the circuit diagram in PSpice software, simulate it and compare with your lab result.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky 3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith

Session 5: Study of Full Wave Diode Rectifier Circuit

Intended Learning Outcome:

a. To understand principle of diode in converting ac into dc.

b. To study different diode rectifier circuits.

Expected skills:

a. Knowledge about Rectifier. b. Experimental skills

Tools Required:

a. Trainer board b. Resistor 10kΩ c. Capacitor 1µF, 47µF d. Diode 4 pieces.

Session Detail:

The diode rectifier converts the input sinusoidal voltage

V

s to a unipolar output

V

o. There are two types of rectifier circuits. One of them is Full-wave rectifier.

The circuit of a Full-wave rectifier is shown in Fig. 3.

CIRCUIT DIAGRAM

1. Construct the circuit of Fig.3 without the capacitor. Observe and sketch

V

i,

V

o. DO NOT TRY to observe

V

i

, V

o simultaneously. Measure ac and dc components of

V

o with multimeter.

2. Sketch input and output waveforms.

Post Lab Exercise:

Post Lab Exercise:

1. Lab report work will be given and submit it accordingly

2. Draw the circuit diagram in PSpice software, simulate it and compare with your lab result.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky 3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith

Session 6: Study of Diode Clipper Circuit

Intended Learning Outcome:

a. To study the application of diodes in different clipping circuits.

Expected skills:

a. Knowledge about Diode Clipper. b. Experimental skills

Multimeter one piece Chords and wire

Session Detail:

Limiter or clippers are used to cut-off or eliminate a portion of an ac signal. A limiter can be realized by using diode and resistor as shown in Fig 1.

Fig. 1

Circuit Diagram

Fig.2

1. Construct the circuit shown in Fig.1. Observe

V

i and

V

o simultaneously on the oscilloscope and sketch the waveforms. Set the oscilloscope in

XY

mode. Observe and record the transfer characteristic of the circuit. Make sure that

V

i is fed to the X channel.

2. Reverse the polarity of the diode in Fig.1 and repeat step 1.

Post Lab Exercise:

1. Lab report work will be given and submit it accordingly

2. Draw the circuit diagram in PSpice software, simulate it and compare with your lab result.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky 3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith

Session 7: Study of Diode Clamping Circuit

Intended Learning Outcome:

a. To study the application of diodes in different clamping circuits.

Expected skills:

a. Knowledge about Diode Clamper. b. Experimental skills

Tools Required:

p-n junction diode(1N4003) one piece 5V Zener diode one piece

Resistor (1K) one piece

Capacitor (10µF) one piece

DC power supply one piece

Signal generator one piece

Oscilloscope one piece

Multimeter one piece

Chords and wire

Session Detail:

The clamper circuit is one that will clamp a signal to a different dc level as shown in Fig 1.

Fig. 1 Circuit Diagram

Fig.1

1. Construct the circuit shown in Fig.1. Observe

V

iand

V

osimultaneously on the oscilloscope and sketch the waveforms. Set the oscilloscope in

XY

mode. Observe and record the transfer characteristic of the circuit. Make sure that

V

iis fed to the X channel.

2. Reverse the polarity of the diode in Fig.1 and repeat step 1.

Post Lab Exercise:

1. Lab report work will be given and submit it accordingly

2. Draw the circuit diagram in PSpice software, simulate it and compare with your lab result.

Further Readings: (If needed)

1. Principles of Electronics: V. K. Mehta

2. Electronic Devices and Circuit Theory: R. L. Boylestad and S. L. Nashetsky 3. Microelectronic Circuit: Adel S Sedra & Kenneth Carles Smith