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Project Financing by EU Funds
Dostál, Tomáš ; MBA, Martin Macháček, (referee) ; Koleňák, Jiří (advisor)
This Diploma thesis is focused on the possibilities of financing a specific project in the company from EU Funds. Theoretical part of this thesis describes an individual funds and policies of European Union. This part also defines the basic informations from Project management. The aim of the practical part is prepare a feasibility study of the project. This project will be co-financed from EU Funds. After that the whole process will be assessed. In the end of the thesis is processed the whole procedure of submission the request from the Business and Innovation Programme through the CzechInvest agency.
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Functional generator
Kopecký, Petr ; Dostál, Tomáš (referee) ; Slezák, Josef (advisor)
Functional generators are equipments that provide electrical signals of variable parameters. They are classified by various criterions – by the type of produced signal or according to the type of self realization of generator. This bachelor thesis deals with the possibilities of realization generators with harmonic, triangular and rectangular signals. It focus on the project of generator in compliance with gained experience and knowledge. The practical part of the thesis is focused on realization of the generator. The function of the generator is checked during the measurements.
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Voltage and current integrators based on modern functional blocks and their application in filters
Šimůnek, Martin ; Petržela, Jiří (referee) ; Dostál, Tomáš (advisor)
The aim of this bachelor´s thesis was utilization of current integrator and voltage integrator along with construction of active filters. In this project are discribed universal filters, which were proposed on the basis of signal flow graphs. In this paper are presented five multifunctional sixth-order filters, which are used in modern functional blocks, for example operational amplifiers (OPA), transconductors (OTA) and current conveyors (CCII+,CCII-). From the mentioned operation amplifiers and the well-known capacitor are created integrators, which the multifunctional sixth-order filter is designed from based on cascade sorting. The aim of this paper is to compare particular types of suggested solutions and to verify the possibility of practical use of these filters with following simulations.
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All-pass filters based on modern functional blocks
Horák, Ondřej ; Petržela, Jiří (referee) ; Dostál, Tomáš (advisor)
The present thesis is focused on all pass filters. The principle of all pass filters, their properties, the design of nth degree of these circuits will be analysed in succession and then some of functional blocks, by which these structures can be made, will be described. After that, the allpass filters will be designed and simulated in program OrCAD PSpice. First of all, the analysis will be performed with ideal components, then with real components. After that, the sensitivity and tolerance analysis will be made and the influence of parasite effects on circuit parameters will be examined. Once the experiments are finished, the design of Printed Circuit Board's (PCB) will be realized. Circuit showing the best parameters will be chosen for the design.
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Realization of the high-end audio amplifier LEACH
Korvas, Miroslav ; Dostál, Tomáš (referee) ; Slezák, Josef (advisor)
The theme of my bachelor’s thesis is a realization of the high-end audio amplifier and it’s modification for the lowest distortion. Because it was not specified, I have decided to for realization of amplifier 100 W. I use modification of LEACH amp circuit for using ThermalTrak [5] transistors. My bachelor’s thesis describes problems of distortion and particular description of separate blocks of LEACH amplifier and their function. The practical part of the bachelor’s thesis contains heat sink design, measurements and simulations of the amplifier and their confrontation to theory. Technical documentation for realization of the ThermalTrak amplifier contains printed circuit board.
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Active frequency filter using current mode
Paščinský, Jiří ; Dostál, Tomáš (referee) ; Slezák, Josef (advisor)
The aim of this work is design of frequency filter working in current mode. The introduction of the work deals with features and applications of frequency filters. Special attention is paid to the transfer function of the filter. In third chapter different operational modes of electrical circuits and their advantages and disadvantages are discussed. Attention is paid to active blocks suitable for circuits working in current mode. There is description of components AD844 and EL2082 which represent current conveyors of the second generation and are used in the designed filter. The last two chapters deal with design of component values of the frequency filter. The designed circuit was simulated in PSpice and the results were compared with measurments. Also sensitivity and tolerance analysis of the filter were performed.
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Fully-Differential Frequency Filters with Modern Active Elements
Langhammer, Lukáš ; Dostál, Tomáš (referee) ; Štork, Milan (referee) ; Jeřábek, Jan (advisor)
Tato disertační práce se zaměřuje na výzkum v oblasti frekvenčních filtrů. Hlavním cílem je navrhnout a analyzovat plně diferenční kmitočtové filtry pracující v proudovém módu a využívající moderní aktivní prvky. Prezentované filtry jsou navrženy za použití proudových sledovačů, operačních transkonduktančních zesilovačů, plně diferenčních proudových zesilovačů a transrezistančních zesilovačů. Návrh se zaměřuje na možnost řídit některý z typických parametrů filtru pomocí řiditelných aktivních prvků, které jsou vhodně umístněny do obvodové struktury. Jednotlivé prezentované filtry jsou navrženy v nediferenční a diferenční verzi. Velký důraz je věnován srovnání plně diferenčních struktur s jejich odpovídajícími nediferenčními formami. Funkčnost jednotlivých návrhů je ověřena simulacemi a v některých případech i experimentálním měřením.
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Application of the syntetic blocks in the electronic circuit synthesis
Labudík, Marek ; Dostál, Tomáš (referee) ; Petržela, Jiří (advisor)
n project is investigated synthetic coils and FDNR, circuits are first simulated in a snap, which I obtained the graph of the input impedance at the frequency and formula to calculate the impedance. The results of this simulation were used for the simulation program PSPICE, the districts where I was compared with the equivalent circuit, which I design on the formula of the snap. Some of the investigated synthetic and FNDR coils were then used for simulation of the oscillators.
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Filtering structures for fotovoltaic power stations
Hruška, Petr ; Dostál, Tomáš (referee) ; Petržela, Jiří (advisor)
This thesis is dedicated to an issue of vibration of photovoltaic panels, which manifests itself primarily in the acoustic field. From the photoelectric effect is gradually getting through photovoltaic cell, panel, string, power plant to define the causes of the vibration. The aim of the work is to design electrical low pass filter that suppress disruptive elements, which prevents audible vibrations of panels and the whole system of photovoltaic power plants.
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