Course detail

Elektrotechnology

FSI-WETAcad. year: 2024/2025

A survey of materials important for electrical engineering. Their properties and field of application. Metals, semiconductors, insulators, magnetic materials.

Language of instruction

Czech

Number of ECTS credits

5

Mode of study

Not applicable.

Guarantor

doc. Ing. Vítězslav Novák, Ph.D.

Department

Department of Electrical and Electronic Technology (UETE)

Entry knowledge

Fundamental knowledge of the physics and matematics on the level of Secondary school.

Rules for evaluation and completion of the course

Course-unit credit is awarded on the following conditions: active participation in lessons - 40 credits.
The exam has a written part only - 60 credits.
Lecture - optional
Labs and studios - participation required

Aims

Classification of important materials and the state – of – art in their research and development.


The survey of materials in electrical engineering.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Not applicable.

Recommended reading

Dorazil, E. - Munsterová, E.: Nekonvenční technologie I (Nekonvenční strojírenské materiály), VUT Brno, 1990
Dorazil,E.: Kovové materiály, VUT Brno, 1991

Classification of course in study plans

  • Programme B-ZSI-P Bachelor's

    specialization MTI , 3 year of study, summer semester, compulsory

  • Programme C-AKR-P Lifelong learning

    specialization CLS , 1 year of study, summer semester, elective

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

doc. Ing. Vítězslav Novák, Ph.D.

Syllabus

Materials for electrical engineering
1. Materials for electrical engineering; modification of their properties by the changes of composition and structure. Band diagram of solid bodies and its influence on conductivity. Electronic, ionic and electroforetic conductivity.
2. Metallic materials. Electric conductivity of metals. Contact potential difference. Corrosion of metals. Materials as conductors, resistor materials, materials for contacts. Solders. Carbon for electrical engineering. Superconduction and superconductors.
3. Semiconductors. Intrinsic and extrinsic semiconductors. Thermodynamic equilibrium in semiconductors. Electric conductivity, the influence of temperature and intensity of electric field. Hall effect, magnetoresistance, thermoelectricity, Peltier effect. Classification of semiconductors with respect to structure and composition.
4. Dielectrics and insulators. Electric conductivity, influence of temperature and intensity of electric field. Mechanisms of polarization, polarization in a.c. and/or d.c. fields. Dielectric losses, breakdown if insulator. Electrostriction, piezoelectricity, pyroelectricity. Gaseous, liquid and solid insulators.
5. Magnetic materials. Ferromagnetics, ferrimagnetics, orbital and spin magnetic momentums, domain structure. The curve of primary magnetization, hysteresis loop. Magnetically soft and hard materials. Materials for recording of signals. Amorph and glassy metals.


Laboratory exercise

26 hod., compulsory

Teacher / Lecturer

doc. Ing. Vítězslav Novák, Ph.D.

Syllabus

Laboratory measurement

1)Investigation of temperature influence on conductive materials and materials for
resistors
2)Estimation of specific losses of ferromagnetic materials by means of an oscilloscope.
(Measurement of specific losses by calorimetric method).
3)Measurement of thermoelectric voltage of metals by a digital system HP 3497 A
4)Measurement iof relative permitivity and loss factor using an accurate RCLG meter
5)Measurement if initial permeability of ferrites
6)Measurement of internal and surface resistivites of insulators using the megaohmmeter HP
4339B
7)Estimation of bandwidth of semiconductors };measurement of temperature influence on
resistivity of a semiconductor
8-10) excursions,
11-13) seminary lesson