Course detail

# Control Electronics

FEKT-KREBAcad. year: 2017/2018

Analog and digital control circuits. Bipolar and unipolar transistors: linear and switching regime. Operation amplifiers: internal structure, circuits with OA. Logic circuits, internal structure TTL, CMOS. Rules for the successfull use of the logic circuits. A/D converters. D/A converters. Special circuits.

Supervisor

Learning outcomes of the course unit

Students are able:

- To describe properties of passive circuit elements R, L, C (linear/nonlinear, parametric/nonparametric).

- To use the parametric elements to the construction of the sensors of the nonelectric quantities (temperature, mech. pressure, ...).

- To list the basic laws and rules for the solving of linear electric circuits, and to use it to the solving of circuits.

- To list and to define the basic transfer parameters of the transfer two-ports.

- To calculate and to draw the Bode diagrams (amplitude and phase) the actual passive two-ports of the RC, and RLC types.

- To calculate and to set the working point of the bipolar transistor in any connection.

- To list and to define h-parameters of the bipolar transistor.

- To calculate the voltage gain and input impedance of the bipolar transistor in the connections: common emitter, common emitter + Re, common collecter, common base.

- To illustrate the connection and to explain the function of the differential amplifier, of the current mirror, and of the constant current source.

- To match the inner structure of the simple operational amplifier, and to explain the principle of its work.

- To describe following linear circuits with operational amplifiers: P, I, D, PI. To calculate its transfer features in the frequency and time domain, to draw its Bode diagrams (ampl., phase).

- To explain the difference between combinational and sequential digital circuits.

- To list the axioms and lemmas of the Boolean algebra. To use it in the practical way to the minimisation of the logic expressions.

- To create the logic expression from the logic table.

- To set the logic combinational circuit defined by the logic expression.

- To list the basic types of the sequential logic circuits.

- To list the basic types of the bistable flip-flop circuits RS, RST, JK, D. To describe its features and function.

- To describe the principle of D/A converters.

- To list the basic types of the A/D converters.

In the laboratory practices the student measures and analyses signals in different electronic circuits with help of oscilloscope. Each circuit (i.e. each work) is realised on the printed circuits board as in the real technical praxis. Student trains following skills:

- To handle and to use basic measure instruments in the electronics laboratory: oscilloscope, signal generator, laboratory supplies.

- To measure properties of the phase pended loop with the circuit 4046.

- To measure the transfer features of the operational amplifier in the invert and non-invert connections: P, P+LF filter of 1st order, follower.

- To measure the transfer features of the active LF-filter of 2nd order with the operational amplifier.

- To measure the static and dynamic features of the signal transistor in the switching regime. To design the optimal driving circuit of the transistor in the switching regime.

- To measure and to analyse the static and dynamic features the operational amplifier connected as the comparator with/without the hysteresis. To realise the oscillator with help of the comparator with the hysteresis.

- To measure and to analyse the features the operational amplifier connected as the integrator. To use the integrator to the realisation of the triangle signal generator. To set the PWM modulator with the help of its.

- To measure the static features of the constant current source with the bipolar transistor. To set the saw voltage generator with the help of it.

- To describe the function and connection of the D/A converter DAC08, the programmable counter CMOS 4029 and the memory Intel 27C64.

Prerequisites

- The student should know the calculations with complex numbers.
- The student should be able to use the Kirchhoffs laws – practically, with a clear insight to a concrete circuit situation.
- The student should know the practical approach to the theoretical solution of linear circuits (sequential simplification, superposition principle, replacement of a voltage source with a serial resistance by a current source with the parallel resistance or in the opposite way, Thevenins theorem). He should know to choose the most advantageous method in each situation and to use it, what needs training. He should understand that the loop current or node voltage methods are simple mechanically applicable however they lead to a system of linear equations whose solving is to heavy going and slow and therefore non-effective for hand-made circuit analysis.
- The student should understand the geometrical interpretation of terms derivation, definite/indefinite integral. He must be able to draw a function created as a derivation or an integral of any previously drawn function – for example a constant, rectangle shape, linear growing etc. He must understand concretely the practical meaning of the integration constant.

Co-requisites

Not applicable.

Recommended optional programme components

Not applicable.

Recommended or required reading

Dostál J.: Operační zesilovače. SNTL, Praha, 1981.

Chee-Mun Ong: Dynamic Simulation of Electric Machinery. Prentice-Hall, 1998.

Sobotka Z.: Kurs číslicové techniky. SNTL, Praha 1974.

Patočka M., Vorel P.:Řídicí elektronika - pasivní obvody.

Patočka M., Vorel P.:Řídicí elektronika - aktivní obvody.

Patočka M., Vorel P., Kerlin T.: Řídicí elektronika - laboratorní cvičení.

Planned learning activities and teaching methods

Techning methods include tutorials and practical laboratories. Students have to complete 7 homeworks during the course.

Assesment methods and criteria linked to learning outcomes

7 x 5 = 35 points for 7 homeworks

65 points at the exam

Total: 100 points

Language of instruction

Czech

Work placements

Not applicable.

Course curriculum

1. Passive circuit elements R, L, C, linear/non-linear, parametric/non-parametric.

2. Parametric elements as sensors of the non-electric quantities.

3. Basic laws a rules for solving of linear electrical circuits.

4. Transfer four-poles, two-ports. The basic transfer facilities. Passive two-poles RC, RLC, the voltage transformer, the current transformer.

5.Bilolar and unipolar transistors – setting of the dc operation point, h-parameters. Connections: SE, SC, SB, differential amplifier, cascodes, current mirrors.

6. Internal structure of operational amplifiers.

7. Linear circuits with operational amplifiers.

8. Non-linear circuits with operational amplifiers.

9. Digital circuits combinational and sequential.

10. Synthesis of combinational circuits.

11. Synthesis of sequential circuits.

12. D/A converters.

13. A/D converters.

Aims

Basic theoretical and practical knowledge for design of analog and digital circuits.

Specification of controlled education, way of implementation and compensation for absences

The attendance at the all laboratory exercises is required.

Classification of course in study plans

#### Type of course unit

eLearning

**eLearning:** currently opened course