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Switched power source 300 V/100 V
Horníček, Evžen ; Lutera, Ondřej (referee) ; Pavelka, Ondřej (advisor)
This thesis deals with design of switching power supply used for supplying of electronical measurement instruments. The project consists of choosing of suitable type of the converter, system design of the converter, design of the pulse transformer and the output coil. For final control of design was designed the convertor with universal control circuit and there were measured its basic parameters. Then, the universal control circuit was replaced by microcontroller.
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DC/DC converter 12 V to 300 V
Buba, Ondřej ; Kubíček, Michal (referee) ; Kolouch, Jaromír (advisor)
The thesis deals with design of switching power supply to power the oscilloscope. In this project the topology of the DC-DC converter is chosen, the pulse transformer and the output coil is designed. The control circuit is also choosen a suggested. This circuit will be replaced with microcontroler ATMEL in the second part of this thesis. The microcontroler will be programmed to replace the control circuit.
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Power flash battery unit for a photo
Slavíček, Tomáš ; Zeman, Václav (referee) ; Pavelka, Ondřej (advisor)
In the thesis deals with the design of the flash unit to take photos with a maximum output of 400Ws. Proposal flash drive contains a regulation of the maximum power output 12,5Ws. The flash unit is supplied from the battery. Bachelor thesis contains a charging circuit. As lamp use lamp IFK - 120 with a maximum output of 120Ws flash. Maximum performance is achieved by parallel connection of four of these lamps. The flash unit is supplied from the battery. The flash unit includes a DC-DC converter with adjustable output voltage of 100W.
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Backup power supply with solar cell
Hrubý, Michal ; Brančík, Lubomír (referee) ; Kubíček, Michal (advisor)
Due to the modern trends of energy production from renewable sources, this thesis deals with backup power powered solar cell. Analyzes the principle of operation of the solar cell, describes its technological development. Describes types of commercially available accumulators and their specific properties and the recommended charging. It then focuses on the description of the activities used DC-DC converters and their specifics. The aim of this work is to construct a backup power device that uses USB, independent of the electric distribution network.
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Optimization of switching regulated DC-DC converter design
Appel, Daniel ; Ing. Jan Bartoň, Meatest, s.r.o (referee) ; Hejátková, Edita (advisor)
The main goal of this project was an optimization of DC-DC converter design from company Meatest with regards to its efficiency, minimalizing power loses and radiated electromagnetic inference, while maintaining its price on reasonable level. The first part of this paper is introduction to the most common converter topologies. In the second part, design and optimization of converter are discussed. The third part is about measurement automatization in Simple. Measurements of converter prototype can be found in fourth part.
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Pulse Generator for GPR
Martínek, Luděk ; Dušek, Martin (referee) ; Šebesta, Jiří (advisor)
This thesis deals with the question of ground penetrating radar. At first it considers the electromagnetic field and its mathematical description. Then it covers measurement of electromagnetic pulses and their processing of sub-surface ground penetrating radar. . In this thesis is also described the involvement of pulse generator with several transistors operating in avalanche breakdown. Individual transistors are compared in time domain. The received waveform is then selected the best transistor for the final generator. Then is proposed solution for the final pulse generator and its implementation. For impulsive generator is also designed and constructed increasing the DC-DC voltage converter. Finally, it is necessary to measure the time behavior of the output pulse generator.
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Design of Power Supply for Aircraft Model
Šrámek, Martin ; Huzlík, Rostislav (referee) ; Hadaš, Zdeněk (advisor)
Diplomová práca, ktorú držíte v rukách, sa zaoberá návrhom elektrického generátoru pre modely lietadiel na diaľkové ovládanie poháňané spaľovacím motorom. Takýmto modelom je dodávaná energia pomocou batérií, ktoré sa musia po vybití vymieňať. Motiváciou tejto práce bolo potlačiť potrebu pristávania za účelom dobíjania batériových paketov. Práca vyvíja niekoľko analýz a simulačných modelov pre riešenie tohto problému.
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Precise adjustable power suplly
Pawlas, Andrzej ; Magát, Martin (referee) ; Kadlec, Jaroslav (advisor)
This bachelor´s thesis deals with the proposing precise switching power supply. This switching power supply works with a maximum of 99 % duty cycle. Input voltage is 12 V and output can be set in the range of 1.2 V - 11.9 V. Current can be a source of burden 0 A - 20 A. The entire power supply is controlled by microcontroller. While addressing the proposal switching power supply have been developed five prototypes. Last prototype works well, but the output appeared significant interference.
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Outdoor Robot Hardware Design
Sitta, Michal ; Veselý, Miloš (referee) ; Žalud, Luděk (advisor)
This work starts with slightly more detailed description of Ackerman and differential steering. Next shows parameters of direct-current brush and brush-less motors and gear-boxes uses in robotics. Electro technical part show problems of control direct-current brush motor, design of DC-DC converter with integrated circuit MC34063, reading information about steering angle with potentiometer and speed with optical encoder. In the end of work is shown simple byte oriented communication protocol used between microprocessor and desktop PC.
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Power supply system for mobile devices with high effiency
Vičar, Ondřej ; Kledrowetz, Vilém (referee) ; Brna, Jaroslav Rakušan, ENERGOKLASTR, Slavkov u (advisor)
This Master’s thesis is focused on design of voltage converter’s system operating with supply voltage of batteries. There are selected appropriate types of batteries, converter topologies and modes of their control. The specified output branches are systematically divided into three separate modules. Each module is designed in detail with focus on high efficiency. The modules are implemented and optimized. Parameter of final modules were measured and compared with correctness of design and theoretical assumptions.
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