| Course Unit Code | 420-2018/01 |
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| Number of ECTS Credits Allocated | 4 ECTS credits |
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| Type of Course Unit * | Optional |
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| Level of Course Unit * | First Cycle |
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| Year of Study * | Third Year |
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| Semester when the Course Unit is delivered | Summer Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| PUN10 | doc. Dr. Ing. Josef Punčochář |
| Summary |
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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.
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| Learning Outcomes of the Course Unit |
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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
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| Course Contents |
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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).
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| Recommended or Required Reading |
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| Required Reading: |
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| Mohylová,J. - Punčochář,J.: Theory of electronic circuits. VŚB - TU Ostrava, 2013 |
Punčochář,J.: Operační zesilovače v elektronice. BEN, Praha 2002 (5. vydání)
Punčochář,J.: Operační zesilovače - historie a současnost. BEN, Praha 2002
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| Recommended Reading: |
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| Horowitz,P.- Hill,W.: The art of electronics, Cambridge University Press |
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 |
| Planned learning activities and teaching methods |
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| Lectures, Individual consultations, Tutorials, Experimental work in labs, Project work |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Exercises evaluation and Examination | Credit and Examination | 100 (100) | 51 |
| Exercises evaluation | Credit | 44 | 26 |
| Examination | Examination | 56 | 7 |