Budapest University of Technology and Economics, Faculty of Electrical Engineering and Informatics

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    Electronics 2

    A tantárgy neve magyarul / Name of the subject in Hungarian: Elektronika 2

    Last updated: 2022. augusztus 29.

    Budapest University of Technology and Economics
    Faculty of Electrical Engineering and Informatics     		Electrical engineering, BSc education
    Course ID Semester Assessment Credit Tantárgyfélév
    VIAUAC11 5 4/1/0/v 5  
    3. Course coordinator and department Dr. Balogh Attila,
    Web page of the course https://www.aut.bme.hu/Course/Electronics2
    4. Instructors Dr. Kökényesi Tamás, assistant professor, Department of Automation and Applied Informatics
    5. Required knowledge Electrical networks, electronic devices and basic circuits, basics of linear regulation theory
    6. Pre-requisites
    Ajánlott:
    Signals and systems 1,2
    7. Objectives, learning outcomes and obtained knowledge The subject creates a basis for learning about the functions, operation and circuit structure of complex electronic systems, and deals with the calculation methods of complex signal-level and power electronic circuits, as well as more complex units, and the fundamental issues of their design. The discussion of the more complex units is made possible by the fact that the subject builds heavily on the material of the subjects Signals and Systems 1 and 2, Microelectronics, Electronics 1, and Measurement Technology. The subject provides a suitable basis in the given field so the subjects later can rely on a solid knowledge of the basic concepts and calculation methods of electronics.
    8. Synopsis

    Detailed thematic of lectures

    Week 1
    Principles of nonlinear circuits, digital approach, diode characteristic approximations, simple limiting circuits, power functions, exponential and logarithmic amplifiers. Circuits with multiple breakpoints, absolute value forming operational amplifier circuit, analog RMS calculation with examples. PSPICE based simulations.

    Week 2
    Voltage reference circuits. Zener diode and Band-Gap reference source. External origin noises, disturbance, galvanically coupled noises.

    Week 3
    Inductive and capacitive coupled noises, calculation and protection principles. Analog regulators, stability condition, concept of phase reserve. Control of a linear system with a proportional controller. Control of an integrating system with a PI controller. Realization of analog PI controller with operational amplifier and transconductance amplifier.

    Week 4
    Concept of direct and indirect synchronization. Structure of PLL, typical signal carriers. Types of phase detectors: counter, XOR gate, analog multiplier version. Software based three-phase vector PLL. Controllable oscillators of two-state signals, sinusoidal oscillator control with Varicap diode, DDS.

    Week 5
    Construction and calculations of PLL regulators, tracking and large-signal properties. Applications of PLL.

    Week 6
    Basic concepts of filter circuits, steps of filter design. Passive R-C, R-L, R-L-C, active R-C, R-L, R-L-C, Sallen-Key filter, switched capacitive filters, signal matching for digital implementation.

    Week 7
    Quartz and its circuit environment, substitute circuits. Case study: NTC signal processing with a microcontroller.

    Week 8
    Power semiconductors, diode switching characteristics, bipolar junction transistor, Darlington circuit, SCR, TRIAC, MOSFET, IGBT

    Week 9
    Single- and three-phase diode rectifiers with inductive and capacitive filtering. AC chopper circuits with resistive and inductive loads.

    Week 10
    DC conversion circuits, shunt regulator, series transistor power supply, LDO. Current limiting solutions. Step down (BUCK), Step up (BOOST), Step up-down (BUCK-BOOST) and FLYBACK switching mode DC-DC converters.

    Week 11
    Control and regulation of switching mode power supplies, presentation of a simple control IC. Losses of switching converters, reduction of losses. Synchronous BUCK circuit. Single-phase full-bridge two-level inverter with R, L, RL load. Two-level half-bridge inverter.

    Week 12
    Control of single-phase inverters, unipolar and bipolar modulation. Generation of sinusoidal voltage with pulse width modulation. Circuit and control of a three-phase two-level inverter. Heating of passive components, temperature dependence of load capacity. Calculation of diode and transistor dissipation in case of continuous and switching operation.

    Week 13.
    Static calculation of cooling, electrical analogy. Concept of transient thermal impedance.

    Detailed thematic of exercises

    Week 2
    Calculation of non-linear circuits: design of non-linear characteristics using diode three-poles and logarithmic and exponential amplifiers. Design of a simple Zener diode stabilizer. Design of the operational amplifier based Zener diode reference source..

    Week 4
    Calculation of external origin noises: examination of the effect of galvanic, inductive and capacitive coupled disturbances. Design of analog controllers: calculation of an analog PI controller with an operational amplifier.

    Week 6
    Design of PLL phase detectors and voltage-controlled oscillators: calculation of the transfer ratio of counter based phase detector and single-integrator type VCO. Examination of PLL large-signal characteristics: determination of capture and tracking range, tuning of the PLL PI controller. Frequency synthesis.

    Week 8
    Design of passive and active filter circuits: design of first- and second-order passive and first-order operational amplifier based filter circuits. Examination of the switching operation of semiconductors (diode, BJT, MOSFET) and calculation of their dissipation.

    Week 10
    Design of semiconductor cooling. Calculation of the main parameters of an ACDC converter: determination of the current conduction angle of a capacitive filtered rectifier, calculation of the output voltage.

    Week 12
    Design of DCDC (BUCK and BOOST) converters, calculation of their main parameters. DCAC converters: calculation of current and voltage waveforms of a single-phase inverter.


    9. Method of instruction The lectures basically use the technique of frontal teaching to introduce the students to the information defined by the knowledge competency elements. The lectures and the available written teaching materials complement each other, but individually they are not sufficient to achieve adequate knowledge. Depending on the activity performed in lectures and exercises, students can earn extra points that count in the grade.
    10. Assessment Learning period    
    The condition for obtaining the signature: writing 2 performance evaluations (on-site mid-term test) with a minimum of satisfactory (2) results and attending at least 70% of the exercises.

    Exam period
    Written exam, in case of at least satisfactory result, we provide an oral opportunity for improvement. An excellent grade can only be obtained with an oral exam after passing the written part of the exam.
    11. Recaps During the learning period, we provide one opportunity for each performance evaluations (on site repeat mid-term test) to repeat.
    12. Consultations Based on the demand, appointed with the lecturer.
    13. References, textbooks and resources Electronic study materials: slides, translated textbook chapters, simulation files, and practice materials supplied on the homepage of the course.
    14. Required learning hours and assignment
    Contact hours 70
    Mid-term preparation for lectures 10
    Preparation for mid-term tests 30
    Homework 0
    Mastering designated written course material 0
    Preparation for the exam
    		 40
    Total 150
    15. Syllabus prepared by Dr. Balogh Attila, associate professor , Department of Automation and Applied Informatics
    Dr. Futó András, assistant professor , Department of Automation and Applied Informatics
    Dr. Gájász Zoltán, assistant professor , Department of Automation and Applied Informatics
    IMSc program Students participating in the program are assigned to separate practical courses. In these exercises, we solve fewer but more complex examples. In the exercises, you can earn extra points by solving examples and answering riddles. In the performance evaluations, in addition to the usual five tasks, we also give a strongly thought-provoking sixth task, the solution of which is not necessary to achieve an excellent grade. Solving the thought-provoking task is also included in the total score, but in addition to achieving an excellent grade, it also means an extra point.
    IMSc score A maximum of 5 (total 10) extra points can be obtained for each of the performance evaluations. The activity shown in exercises and lectures is rewarded with a maximum of 15 extra points. Plus points are converted into iMSc points if the student achieves an excellent grade in the subject.