Electronic Devices


Educational goals

The main objectives of the course are: (i) to introduce to the meaning of Feedback and Frequency Response in analog electronics, (ii) to develop the ability to analyze and design analog electronic circuits, discrete and integrated, (iii) to understand the operation of different configurations of Power, Differential, Operational and Multistage amplifiers.

  • Recognizes, distinguishes and compares the operating classes of power amplifiers to calculate and judge the basic sizes of class A, B and AB power amplifiers and identify how class C power amplifiers operate.
  • Examine and explain the frequency response of electronic circuits and identify, explain and plot the description of the frequency response with Bode diagrams.
  • Describes the general structure and basic properties of negative feedback and distinguishes the basic feedback topologies in electronic circuits.
  • Identifies and explains the function of the differential amplifier circuit, calculates the DC and weak signal analysis of the differential amplifier, recognizes and evaluates the characteristics and operating problems of the differential amplifier.
  • Recognizes and explains the function of the main power mirror circuit and its improvements.
  • Explains the function of the ideal effect operational amplifier (OA), recognizes its steps
  • compare the basic characteristics of the ideal and the real OA, identify and explain the function of the basic OA wires and the amplifier, instrument, and circuit amplifier circuits.
  • Analyze and design linear OA circuits and identify and explain the function of non-linear circuits of the comparator, latent comparator, integrator and divisor with OA.
General Skills
  • Search, analyze and synthesize data and information, using the necessary technologies.
  • Decision making.
  • Independent work.
  • Teamwork.
  • Exercising criticism and self-criticism.
  • Promoting free, creative and inductive thinking.

Course Contents

The course includes the following topics:

Power amplifiers: Classification of Power amplifiers, Class A, Class B, Class AB, Class C and Class D output stages, Power consumption of BJTs.

Feedback: General feedback structure, Properties of Negative feedback, Four Basic feedback topologies, Effect of Feedback on amplifiers.

Differential and multistage amplifiers: BJT Differential pair, Biasing, DC and small-signal operation of the differential amplifier, CMMR, Non-linearities, BJT differential amplifier with Active load, Current mirror circuit, Multistage amplifiers.

Operational Amplifiers: Basic op-amp circuit, Ideal model, DC and small-signal analysis, Gain and Frequency response, Inverting, Non-Inverting, Follower, Adder configurations, Integrator, Differentiator, Difference amplifier, Instrumentation amplifier, Circuit design using op-amp, Problems on op-amp operation.

Frequency response: Amplifier transfer function, Fourier analysis, Low and High frequency response, Bandwidth, Bode diagram.

Teaching Methods - Evaluation

Teaching Method
  • The course is developed in lectures and laboratory exercises in parallel. The laboratory includes experiments with electronic components circuitry development over breadboard. Oscilloscope, signal generator and power supply are used. Also, special software for electronic circuit simulation (SPICE) is used. The laboratory exercises (experiments) cover the following topics: Class A, B, AB output stages, Differential amplifier, Negative feedback, Op-amp configurations.
Use of ICT means
  • Face to face teaching
  • Notes and slides available in electronic form
  • Use of asynchronous learning platform (Moodle)
Teaching Organization
Activity Semester workload
Problem solving28
Laboratory exercises26
Preparation for laboratory exercises26
Individual study and analysis of literature48
Total 180
Students evaluation

Evaluation is based on: (i) the final written exams in theory, (ii) laboratory tasks evaluation and partial written exams in laboratory exercises. Also, projects are available on per request basis which are accumulated over the final grade.

Recommended Bibliography

Recommended Bibliography through "Eudoxus"
  1. Malvino A., Bates D., "Electronic Principles", McGraw-Hill Ed.
Complementary greek bibliography
  1. Milman J., Grabel A., "Μικροηλεκτρονική", Εκδ. Α. Τζιόλα & Υιοί , Έκδοση 2η, 2014, ISBN: 978-960-418-424-8, Κωδ. Ευδόξου 32997429.
Complementary international bibliography
  1. Bobrow, Funtamentals of Electrical Engineering, Oxford University Press.
  2. Hambley, Electronics, Prentice Hall.
Scientific journals
  1. IEEE Transactions on Circuits and Systems
  2. IEEE Transactions on Instrumentation and Measurement