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Backup power supply with solar panel charging
Křepela, Pavel ; Götthans, Tomáš (referee) ; Kubíček, Michal (advisor)
This project aims to create a backup power source with solar charging for small mobile devices (through USB connector). The charger should store power in a battery that is charged either from external power source or the solar panel. In the introduction, the work deals with the theory of solar cells and batteries. Furthermore, it described the selection of suitable components and design diagram.
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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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Processor controlled backup power supply
Hořák, Jan ; Štraus, Pavel (referee) ; Kubíček, Michal (advisor)
This thesis describes the design of a processor controlled small battery backup power supply. The aim is to design a device which can recharge many kinds of mobile devices with a battery capacity up to 2Ah. The main control element is a microprocessor that records operating data of the power supply and stores in onto an SD card. Portability and durability were taken into account during the design. The result is completely designed and build a backup power supply, including program for its microcontroller.
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Solar charger with embedded accumulator
Háněl, Petr ; Dušek, Martin (referee) ; Kubíček, Michal (advisor)
The mobile devices are under rapid development today and thereby they put still more challenging requirements on charging technologies. The thesis deals with design and development of an off-line charger device for travel use. It is based on an accumulator that is being charged continuously using a solar cell. Alternatively the accumulator can be charged using a standard USB port. One of the key requirements on the device was simplicity of its circuitry in order to make the device cheaper and more reliable. The device is able to supply any mobile device that is using a standard USB port.
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Backup power-pack for cell phones
Kovařík, Jindřich ; Povalač, Aleš (referee) ; Kubíček, Michal (advisor)
This Bachelor`s thesis is focused on the issue of high energy intensity modern mobile phones. The aim is to create a backup power supply with its own batteries, which will be able to recharge your mobile phone in the absence network resources. Implementation of backup resources must be sufficientlymechanically resistant to be usable in practice.
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Testing and charging of accumulator cells
Sršeň, Jan ; Kubánek, David (referee) ; Lattenberg, Ivo (advisor)
Direction of the master's thesis is design and construct electronic device for testing available accumulators. Than there are in detail subscribe some metods of charging cells and their right usage to select type of cells. Also eventually problems that can become if the choice is false. Next part contains description of principles as several type accumulator works and their loading characteristic witch are important know for choose the best testing way. The most important knowledge is detection of stop point charging when accumulators are charged and following charging can be dangerous. Because there are more methods to detect this point so in thesis are overwrite. The most important part is design of tester. That is mapped to more segments witch communicating together. Controller part of intelligent tester contains ATmega128 microcontroller so there is present a passage of program code. Last section of master's thesis describe a physical consruction and explain division for smaller parts and hole process of tester function.
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