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Digital volume control pod with graphic display
Schilhab, Karel ; Balík, Miroslav (referee) ; Hanák, Pavel (advisor)
The bachelor thesis deals with the design and construction of a digital volume control with graphical indication, Mute and Standby functions. The design includes a microcontroller, OLED display, D / A converter, incremental encoder and voltage stabilizer. Communication in the device takes place via the I2C line. Stopping the volume is realized by changing the voltage in the range from 0 to 1 V. The aim of the work is to design and manufacture the circuit, write the source code and build the device into the box.
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General purpose analog signal converter
Strážnický, Martin ; Povalač, Aleš (referee) ; Kubíček, Michal (advisor)
This work deals with the design of a galvanically isolated converter of continuous analog signals and the design of a galvanically separated converter of digital TTL signals to HTL signals. The device is complemented by a STM32 microprocessor, which ensures the connection of analog input and output. The result of the work is the circuit structure of individual units, the results of simulations of important units, complete data for the production of device and measured values of individual units.
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Design of current-steering DAC for differential IQ decoder
Klein, Miroslav ; Šotner, Roman (referee) ; Dřínovský, Jiří (advisor)
This master’s thesis deals with design of two channel digital to analog converter for automotive applications. In first part, different topologies of D/A converters and their properties are discussed, with focus on current steering topology. Second part deals with design of convertor topology and current steering application. In third part, all parts of designed convertor are described and simulations results are presented. The designed two channel D/A converter has differential current output with 11b resolution per channel.
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Control Systems
Vala, Jiří ; Konvalina, Jiří (referee) ; Kunovský, Jiří (advisor)
The MSc Thesis deals with real-time modelling, especially with the control circuits, where we focus on the regulation circuit with auxiliary model of the regulated system. The introduction contains the Theory of Controls and regulation. The work is divided into two basic parts. The first part deals with the problems from the theoretical point of view. The theoretical part is concerned with the general systems. Various definitions of systems, their partition and mathematical methods for their description are mentioned after introducing. A description the regulation circuits, their partition, structures and types follows. There are shown the particular regulators and different types of regulated systems in details. Mathematical methods applied to solve the differential equations that describe the models of the systems are summarized in the second part of the work. The end of this chapter is concerned with the TKSL system. In the practical part I have produced Microsoft Power Point program which summarizes the results of experiments, made in the TKSL and TKSL/C system. The output of simulation was transformed into the graphs in the format of Microsoft Excel. The last part deals with suggestion and implementation simulators of control circuits.
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Simulator of current output 0-24mA
Mačišáková, Kateřina ; Benešl, Tomáš (referee) ; Bradáč, Zdeněk (advisor)
This bachelor thesis deals with design of very accurate current output simulator 0-24 mA with microcontroller with resolution 0.001 mA. In the thesis I deal with the market re-search with similar devices, theory and then with the conception of the whole system concept, with the identification of used components and with the evaluation of their suitability. I propose here a circuit diagram and a printed circuit board, which I then produce and install. For the resulting device I design and produce a box that will suita-bly complement and unify the entire system. I will revive the whole device, program it and test its functionality.
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Simulator of voltage output 0-10V
Mačišák, Martin ; Baštán, Ondřej (referee) ; Bradáč, Zdeněk (advisor)
This bachelor's thesis deals with the design of the voltage output simulator in range of 0-10 V with microcontroller. The part of my bachelor's thesis is theoretical outline of whole system, draft of this system and draft of source. Further creation of wiring diagrams and PCB. Fitting of PCB and programming. This thesis checks up the functionality of the draft and also of whole system. Next outputs are compare with required outputs. Literary research is integral to my bachelor's thesis.
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Simulator of voltage output -10V to +10V
Horváth, Michal ; Streit, Jakub (referee) ; Bradáč, Zdeněk (advisor)
This thesis is about voltage simulator with microcontroller. The thesis presents some of the available industrial concepts. After that custom design is being proposed of simulator. Hardware proposal includes schematic and printed circuit board design of simulator and power supply. After designing of hardware part, the thesis focuses on software developing. Eventually, the thesis focuses on measurement and discussing of measured results.
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Design and construction of double laboratory power supply
Klein, Miroslav ; Šebesta, Jiří (referee) ; Brančík, Lubomír (advisor)
This semester thesis deals with design of double laboratory DC power supply with adjustable voltage and current limitation. Power supply can work in two states. First state allows regulation of output voltage from 0V to 40V and current limitation from 0A to 3A. In second state the range of output voltage is from 0V to 18V and output current can be set from 0A to 6A. Both supplies are galvanically separated and can work independently, or can be combined. Whole power supply is digitally controlled by microcontroller.
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