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Adjustable filters with utmost tuning and untraditional active elements
Voráč, Ladislav ; Herencsár, Norbert (referee) ; Jeřábek, Jan (advisor)
The thesis is paid to design frequency filters steerable jet active elements of the MO–CF (Multiple-Output Current Follower) and also newly-developed current active element DACA (Digitally Adjustable Current Amplifier) in the company ON Semiconductor. The first three chapters focus on basic properties of frequency filters, used components and circuit design methods. The digitally controllable current amplifier DACA is used for managing the radio frequency filters and adjust it using the current amplification parameter A through the digital input CTR. For the design of filters of the second order a method of M-C Signal flow graphs is used. This method is in the work proved very useful and contributed to the modification of already designed frequency filters. The fourth chapter describes the actual detailed design of circuits with quality management, or marginal frequencies to the two parameters. Involvement of the proposed filter is simulated in the OrCAD program for different levels of models of the circuit elements. At the end of each filter design there is a comparison of theoretical and simulated values of the adjustable parameters circuit. The conclusion was one of the districts selected for experimental verification, followed by comparing the measured and simulated transmission characteristics.
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Strain Gage amplifier
Kneblík, Adam ; Havránek, Zdeněk (referee) ; Beneš, Petr (advisor)
The thesis deals about method of gain signals from strain gauge bridges. There are mentioned some signal conditioning methods for bridges amplifiers and charactered their properties. In the next part of this thesis are calculated the amplifier errors for various temperature. There are projected individual variants of strain gage amplifiers (instrumentation amplifier AD524, isolation amplifier, switched capacitor based instrumentation amplifier), their properties are compared with strain gage amplifier Vishay P-3500.
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Reconstruction of family house near the Tomek Square, Brno
Kešiar, Szabolcs ; Bažant, Zdeněk (referee) ; Strnad, Jiří (advisor)
The bachelor´s thesis deals with the reconstruction of a family house. The main goal is the design and assessment of the main load-bearing elements. The thesis contains load effects calculations about the new construction, followed by the design and assessment of the new constructions. The final part of the thesis contains the assessment and strengthening of the already existing parts of the building. Furthermore, it contains the design about the concrete bond-rim and foundations under the structure of the basement.
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Tube guitar amplifier
Mostecký, Jan ; Balík, Miroslav (referee) ; Kratochvíl, Tomáš (advisor)
This bachelor thesis studies guitar tube amplifiers. The thesis introduces basic concepts behind electrical valve circuits. After that there is a scheme of a modified vacuum tube amplifier designed by the author. The functionality of the design has been verified via computer simulation. Designed amplifier was built afterwards and its functionality was verified via measurements.
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Causal interaction analysis of cardiovascular signals
Tiurina, Mariia ; Kolářová, Jana (referee) ; Svačinová, Jana (advisor)
Application of the non-invasive methods to detection of the baroreflex sensitivity is a correct way to evaluate the functions of cardiovascular system. This master’s thesis describes the theoretical informations about the problem of baroreflex sensitivity from anatomical, patalogical and clinical views. Theoretical knowledges are foundation for mathematical description of some methods to detection of baroreflx sensitivity in time, frequency and information dimensions. In the practical part of the master’s theses are presented two methods of BRS detection – sequence method based on finding the specific sequences of time series signals and method of application bivariante autoregressive model. Both of methods are implemented in MATLAB. The results of testing data on real data are discussed.
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Precise Audio Amplifier for Quality Listening
Janošík, Lukáš ; Šotner, Roman (referee) ; Kratochvíl, Tomáš (advisor)
This bachelor thesis deals with a design of quality audio preamplifier designed for high quality production. The typology of whole design emphasizes very important transmission properties, i.e. high signal-to-noise ratio, high separation of channel, low distortion, The content of the semestral thesis is an symetrical input, relay input switch, 5 band equalizer with bypass and symetrical output with active line driver.
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Static reconstruction of the baroque wine cellar
Kešiar, Szabolcs ; Bažant,, Zdeněk (referee) ; Strnad, Jiří (advisor)
The diploma thesis is focused on the design of structural support and construction modifications of a baroque wine cellar, which is part of a double-storeyed house. The first part deals with the statical analysis and structural support of a masonry barrel vault, which was loaded with a new building. The second part deals with the reconstruction of the double-storeyed object, which is in a state of disrepair with heavily developed cracks. The thesis contains a technical report, analysis of statics, drawing documentation and the work progress. The calculation of internal forces were executed by the software Scia Engineer 2017. The drawing documentation contains a formwork and reinforcement drawing, maping of cracks, leading of tensions in the walls and vault including of floor plans, sections and elevations, production plans of base plates and deviators, reinforcement drawing of concrete bond beam and finally the construction process of upper construction.
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