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Design of switching stereo audio power amplifier
Konečný, Jiří ; Papica, Petr (referee) ; Brančík, Lubomír (advisor)
This text analyzes characteristics of audio power amplifiers in class D. The emphasis is placed on more detailed analysis of modulators, drivers, connection topology of power transistors. In the next section of text are analyzed available integrated circuits of power amplifiers in class D which are manufactured by world producers. The last part describes design of all parts of amplifier in class D with discrete components and also of power supplies. According to the plans, the individual parts are made. All parts are tested by measurements and results are evaluated.
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Assembled Steel Tanks
Konečný, Jiří ; Hrstka, Miroslav (referee) ; Marcián, Petr (advisor)
This thesis deals with the area of bolted steel tanks, which constitute a significant share of the total number of tanks of all types of tanks. In the first part of this thesis is mentioned short history of bolted steel tanks, tanks producers and major standards and standards governing the calculation and realization not only these tanks. In the next part of this thesis mentions the various segments and major parts of bolted steel tanks. This is followed by a short description of the assembling. The last section describes the creation of a computer model of roofs used in simulation program ANSYS and subsequently performed stress-strain analysis for snow loads according to various snow areas for different FEM model in the 2D and 3D levels.
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Specific substances in drinking water sources
Konečný, Jiří ; Kučera, Tomáš (referee) ; Biela, Renata (advisor)
In this bachelor thesis I dealt with specific substances which occures in sources of drinking water and pollutes quality of water. Especially its heavy metal, sulfur compounds, nitrogen, phosphorus and other. In this thesis I deal with possibilities about remove of these substances by using various methods, especially absorption on filter materials. These thesis is focused on using absorption on suitable materials for reduction of concentration arsenic and cadmium in drinking water. In first part I‘ve characterized subtances which occures in the water and outlined a way to remove them. Second part is focused on laboratory observation to efficiency of removing arsenic and cadmium on sorption materials.
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Účetní závěrka sestavená dle českých účetních standardů a IFRS
Konečný, Jiří
This bachelor thesis deals with main differences of financial statement drawn up in accordance with Czech Accounting Standards and IFRS. Theoretical part describes individual accounting statements of both financial statements and their requirements. Last two chapters of theoretical part are focused on basic differences and process of the first IFRS application. The practical part of thesis is dedicated to comparison of financial statements of concrete companies from transport sector. In conclusion of this thesis are named some strong and weak sides of both accounting systems.
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Sociálně ekologické aspekty pěstování cukrové třtiny a dovozu třtinového cukru do České republiky
Konečný, Jiří
The bachelor thesis characterizes class Poales, family Poaceae and genus Saccharum. Next chapters describe history of sugar cane growing, climatic conditions suitable for growing, method of cultivation and harvesting, including the sugar cane processing. Part of work includes data about the world's largest producers of sugar cane and world's producers are characterized. It presents statistical data supplemented by tables and graphs the largest importers and exporters of cane sugar. Next part describes the import of cane sugar to the Czech Republic. The most important exporters are described, who are also producers of sugar cane. The previous part follows the final chapter devoted to socio-ecological aspects of cultivation of sugar cane on the population in the countries, from where cane sugar is most imports to the Czech Republic.
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