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Oscillators and function generators using current and voltage conveyors
Šťastný, Lukáš ; Jeřábek, Jan (referee) ; Koton, Jaroslav (advisor)
Conveyors are an integral part of modern devices. In this thesis, a slew of areas oscillators and function generators with current and voltage conveyors. Individual applications are categorized according involvement with conveyors and other elements. The functionality of the need for involvement in the program PSpice simulation. As a current conveyor is used OPA861, EL2082, further use of RC circuits and opto-CNY 17.
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Single-Phase Induction Motor Calculation
Vácha, Pavel ; Vítek, Ondřej (referee) ; Hájek, Vítězslav (advisor)
The master´s thesis deal with the thesis of a single-phase induction motor that is more and more used all over the world. Its aim is assembling the information about this type of motor and its calculation. The content of the first part is the theoretical analysis of a single-phase induction motor and acquirement ways of the stroke moment. Than the work contains a project of basic schema of the single-phase induction motor with an auxiliary phase. The practical part is devoted to an elaboration of demonstration example of the single-phase induction motor with concrete parameters calculation, its method was projected before. Than there is practising successived measuring on the motor of the same parameters made firm EMP s.r.o. Slavkov by Brno in this part. In the conclusion there is the evaluation of the whole process with reached results.
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Dynamic simulation of DC motor using FEM
Gottwald, Michal ; Huzlík, Rostislav (referee) ; Vítek, Ondřej (advisor)
My diploma thesis deals with a specific dynamic model of DC motor with the parameters obtained from the calculation and from the program using the finite element method. It shows how much accurate results can be achieved in the model, if you use only the values which can be measured, recorded and calculated on the engine. This thesis contens three parts. First part describes the structure and function of DC motor and the basic principle and the use of FEM. Next is calculation analytical and numerical parameters. The search parameters include torque, resistance and inductance of armature winding, resistance and inductance of excitation windings. The last part is dedicated to creating a dynamic model. Results from the dynamic model and measured values are compared in the conclusion of my thesis.
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Stabilized operation of a 400 kV power line
Girga, Eduard ; Špaček, Jaroslav (referee) ; Blažek, Vladimír (advisor)
Electrical wiring 400 kV is the most used transfer wiring in the Czech Republic with length over three thousand kilometers. It is frequently used for running out significant output from the big power plants and for its significance in electrical engineering. Theoretical part of this thesis deals with the cross-section of mainly used methods for high and extra high stable wiring voltage solution. These methods can be generally dividend into precise and rough. Both of these methods will be analyzed in next chapters. Exact solution comes out from the presumption of equally spaced parameters. The rough solution uses substitution of double gates wiring, this method is accurate enough and accelerates the calculation. Former mentioned reasons explains it’s often use in technical practice. The electric line is substituted by T-cell, II-cell or Steinmetz cell according to length and required precision. Special method of rough solution is the broad method which enables to solve randomly knotted network by using II-cell to replace electric wiring between single knots. This method is mentioned in thesis for completeness; the network solved by me is not knotted. Part of the theoretical thesis is the analysis of specific transfer cases. In computing part will be mentioned not only the computation of stable wiring state with precise an rough method - with all former mentioned cell but the computation of specific transfer cases as well. In the end will be concluded all the counts from computing part and from precision view evaluated used methods of the stable wiring solution.
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Tissue impedance measurement
Nejezchleba, Zdeněk ; Rampl, Ivan (referee) ; Chmelař, Milan (advisor)
Bachelor thesis deals with the measurement of resistance of the skin with direct current. It describes the changes in the value of time, depending on the emotional stability of the human and his psychological habit. It is a method able describe the relatively objectively and compare human emotions.
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Ordinary legal remedies in Czech criminal procedure
Jedličková, Klára ; Spirit, Michal (advisor) ; Žák, Květoslav (referee)
This bachelor thesis deals with the ordinary legal remedies in Czech criminal procedure. In the first chapter are defined legal remedies in general, namely the history and their division into ordinary and extraordinary legal remedies. There is also the remedial procedure and its principles mentioned. The main part of my work is dedicated to ordinary legal remedies: complaint against the resolution, appeal against the judgement and protest against the criminal warrant. It's focused on the characteristics of each of these remedies and also their content and formal requirements, reasons, place and period for their filling, authorized persons and the procedures about them. The last chapter is an analysis of several court decisions, where the possibillity of filling the ordinary legal remedies was used.
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Preschoolchildren's relationschip with animals
JUHASOVÁ, Petra
The present Barchelor's thesis investigates a preschool children's relationship with animals. The research methodology and questionnaire focused on 15 unpopular animals were developed. The questionnaire was completed by 71 preschool children. Research results were compared with several czech and foreign studies. Educational project aimed at changing preschool children's relationships with unpopular animals was created based on results of the study.
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Problems and measurements of the basic electrotechnical quantities
BOHÁČ, Radek
The purpose of this thesis is selection and specification of basic teaching methods used in heavy current laboratory during vocational training education at secondary school. Basic methods for electrical values measurements in heavy-current laboratory, measuring instruments basic division and measured electrical values evaluation. Further, basic measurement of electrical values, current, voltage, power, resistance and capacity are specified here.
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Ordinary Legal Remedies in Czech Criminal Procedure
Vojta, Martin ; Spirit, Michal (advisor)
This thesis deals with the topic of judicial remedies admissible against decisions, which haven't become legally effective. The Czech Criminal Procedure recognizes three kinds -- appeal, complaint and protest against criminal writ. The first part contains commentary on leading principles and maxims of criminal remedial proceeding. It is followed by thorough examination of the three currently effective judicial remedies. This part is divided according to individual elements of these remedies such as: essential requirements on form and content, allowed reasons and object, entitled persons, the procedure itself and possible outcomes. The last part briefly summarizes expected changes that will be brought about by the new legislation, which is being prepared at the time. Remedial Criminal Procedure represents although it is not compulsory a vital stage of Criminal Procedure in any democratic country. It helps to guarantee its fairness and righteousness. Legal remedies contribute to the protection of human rights touched by the state during criminal trials.
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