Semester 4

Course: Electronics I

Course Code: ΜΚ25
Course Level: Undergratuate
Obligatory/Elective: Elective
Semester: 4
Division: Main Course
Group: Main Course
ECTS Credits: 5
Hours Per Week: 5
Language: Greek


Ch 1: Semiconductors
1.1 Energy bands
1.2 N-type and P-type semiconductors
1.3 Semiconducting elements
Ch 2: Semiconductor diodes
2.1 The pn junction
2.2 Biasing a pn junction
2.3 Voltage-current characteristic curve of a diode
2.4 Diode models, barrier potential, dynamic resistance
2.5 dc diode resistance
2.6 Temperature effects
2.7 Diode datasheet information: power rating and pick inverse voltage
Ch 3: Special purpose diodes
3.1 LED
3.2 Zener diodes
3.3 The zener voltage and load regulator
Ch 4: Diode applications
4.1 The half-wave rectifier
4.2 The full-wave rectifier
4.3 The capacitor filter
4.4 Voltage and load regulation
4.5 Limiters
Ch 5: Bipolar Junction Transistors (BJT)
5.1 BJT structure
5.2 Forward-inverse bias
5.3 The common emitter (CE) connection
5.4 Base bias
5.5 Voltage divider bias
5.6 Other types of bias
5.7 Troubleshooting
Ch 6: The CE amplifier
6.1 DC and AC models
6.2 AC resistance of the emitter
6.3 The CE amplifier analysis (voltage gain)
6.4 Emitter resistance elimination
6.5 Multi-stage amplifiers


Assignment 1: The diode curve
Assignment 2: Rectifier circuits
Assignment 3: The capacitor-input filter
Assignment 4: The zener diode
Assignment 5: The zener regulator
Assignment 6: The CE connection
Assignment 7: LED drivers
Assignment 8: Setting up a stable Q point
Assignment 9: Biasing of a pnp transistor
Assignment 10: Coupling and bypass capacitors
Assignment 11: The CE amplifier

Learning Outcomes:

«Electronics Ι» is the first part of a two‐semester curses. It is dedicated to the principles of analog
electronic circuits.
Starting with the atomic structure of semiconductors, the syllabus continues with the main
characteristics of the pn junction, diode biasing and characteristics, the main rectifier circuits, and
power supply filters and regulators. It also contains elements of the Bipolar Junction Transistor (BJT)
structure, BJT bias circuits and their function as small signal amplifiers and switches.
Electric circuit design and analysis is based on theoretical calculations assisted by a powerful
computer simulating tool, MultiSim.
On successful completion of this module the learner will be able to:
• Explain how to bias a diode and describe its IV characteristic curve.

• Design and analyze the operation of three basic rectifier circuits: half-wave rectifier, center-
tapped and bridge full wave rectifier.

• Describe the function of power supply filters and regulators.
• Describe the three types of BJT bias circuits: base, voltage divider and emitter.
• Design and analyze the operation of a BJT as a small signal amplifier.
• Use a BJT in a switching circuit.



Teaching Methods:
Method Description Semester Workload
Lectures 39
Lab experiments 13
Tutorial exercises 13
Writing work / tasks 20
Autonomous study 40
Total 125

The grade of the course theory derives from the
grade of the written examination as well as that
of the possible progress exams. The grade of the
course laboratory is that of the final exam
(Project), in which the quality of the delivered
assignments is taken into account qualitatively.
The final grade of the course is calculated
indicatively based on the following equation.
Final grade = 0.75 (Theory grade) +0.25
(laboratory grade), if (THEORY grade) ≥ 5.

Suggested Books:

1. 1. Albert P. Malvino, «Βασική Ηλεκτρονική», 4η έκδ./2007,
ΙSBN: 978-960-7219-12-0, Εκδ. ΤΖΙΟΛΑ, Κωδικός βιβλίου
«ΕΥΔΟΞΟΣ»: 18549034.
2. 2. Thomas L. Floyd, «Ηλεκτρονικά Στοιχεία», 1η έκδ./2014,
3. 3. Γ. Χαριτάντης, «Εισαγωγή στα Ηλεκτρονικά», 2006,
ΙSBN: 978-960-91034-6-6, Εκδ. ΔΕΜΕΡΝΤΖΗΣ ΠΑΝΤΕΛΗΣ,
Κωδικός βιβλίου «ΕΥΔΟΞΟΣ»: 2139.
4. 4. Thomas L. Floyd & David M. Buchla, «The Science of
Electronics», 2005, Prentice Hal

Lecturer: Gavros Konstandinos