449-0514/01 – Basic amplifier structures (ZZS)

Gurantor departmentDepartment of Theoretical Electrical EngineeringCredits4
Subject guarantordoc. Dr. Ing. Josef PunčochářSubject version guarantordoc. Dr. Ing. Josef Punčochář
Study levelundergraduate or graduateRequirementOptional
Study languageCzech
Year of introduction2006/2007Year of cancellation2007/2008
Intended for the facultiesFEIIntended for study typesBachelor
Instruction secured by
LoginNameTuitorTeacher giving lectures
PUN10 doc. Dr. Ing. Josef Punčochář
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+2
Part-time Credit and Examination 2+2

Subject aims expressed by acquired skills and competences

After completing this course, the student should be able to analyze linear circuits (amplifiers, filters, oscillators) with real active circuit elements: operational amplifier; transconductance amplifier; transimpedance amplifier; current conveyor

Teaching methods


Basic properties of active tripoles(BJT, JFET, MISFET). Description of basic modern op amps function blocks (differential input amplifier, current mirror as an active load, modern complementary follower)-their application in modern amplifier structures (voltage feedback amps - VFA, current feedback amps - CFA, transconductance amps - OTA, VFA based on CFA, etc.). Basic application circuits and notes. Degradation of semiconductor structures.

Compulsory literature:

Punčochář,J.: Operační zesilovače v elektronice. BEN, Praha 2002 (5. vydání) Punčochář,J.: Operační zesilovače - historie a současnost. BEN, Praha 2002

Recommended literature:

Punčochář, J.: Lineární obvody s elektronickými prvky. Skriptum, VŠB-TU Ostrava 2002 Mohylová, J.: Lineární obvody s elektronickými prvky -Sbírka příkladů, VŠB-TU Ostrava 2002 Vobecký, J. - Záhlava, V.: Elektronika (součástky a obvody, principy a příklady). Grada, Praha 2001 Belza, J.: Operační zesilovače pro obyčejné smrtelníky. BEN, Praha 2004

Way of continuous check of knowledge in the course of semester

Conditions for credit: Student must work out three tests. Student can receive up to 6 points for each of tests. Maximum number of points student can gain through tests is 3 * 6 = 18 points. Student can gain up to 12 points from the laboratory exercises (6 * 2 = 12 - 2 points each problem). Student can gain up to 14 points from the project. To pass the excercises part of course student has to gain at least 26 points. Student can gain up to 56 points from the final exam (circuit work - 32 points, oral part - 24 points). To pass the course student has to gain at least 51 points.


Other requirements


Subject has no prerequisities.


Subject has no co-requisities.

Subject syllabus:

Lectures: Voltage feedback amplifier as an ideal element; basic feedback concept. Tubes, bipolar and unipolar transistors - history, basic properties. Differential transistor input stage; follower (modern - complementary); current source as active load; current mirror. Voltage feedback amplifiers - VFA - with limited current source in the input stage (classical). Basic VFA applications (amplifiers, generators, comparators). Current feedback amplifiers - CFA. Basic CFA applications. VFA based on CFA structure. Typical nonlinear applications of operational amplifiers. Operational transconductance amplifier (OTA) principle, Northon amplifier (NA) principle, current conveyor (CC) principle. Comparision of op amps structures from point of view of application properties. Principle of regulated sources, band - gap reference. 1. and 2. order filters, principle of cascade filters. Degradation of electronic elements with temperature, dissipated power (causes of degradation) - reduction of influence (abduction of heat - heat sink). Exercises: Basic transistor amplifiers; quiscent point. Amplifiers with ideal OPA (invert, noninvert, differential). Comparators, generators and oscillators -ideal OPA. Influence of real OPA properties. An example of nonlinear application -rectifier, limitter. 1. and 2. order filters, principle of cascade filters. Definition of project, discussion. Laboratories: Measuring of inverting and noninverting amplifier properties - data sheets. Measuring of differential amplifier properties - data sheets. Measuring of degradation of amplifier frequency properties with gain increasing. Measuring of properties of square wave generator - data sheets. Measuring of rectifiers and limiters. Measuring of 1. and 2. order filters, cascading of filters. Projects: EXAMPLES: Design of 2. order filter (it is required Q, characteristic frequency, etc.) Design of square wave generator. Design of RC oscillator (constant frequency).

Conditions for subject completion

Part-time form (validity from: 1960/1961 Summer semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of points
Exercises evaluation and Examination Credit and Examination 100 (100) 51
        Exercises evaluation Credit 44 (44) 0
                Laboratory work Laboratory work 12  0
                Written exam Written test 18  0
                Other task type Other task type 14  0
        Examination Examination 56 (56) 0
                Written examination Written examination 32  0
                Oral Oral examination 24  0
Mandatory attendence parzicipation:

Show history

Occurrence in study plans

Academic yearProgrammeField of studySpec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2007/2008 (B2649) Electrical Engineering (2602R014) Applied and Commercial Electronics P Czech Ostrava 3 Optional study plan
2007/2008 (B2649) Electrical Engineering (2602R014) Applied and Commercial Electronics K Czech Ostrava 3 Optional study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner