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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
A Design And Development Of A Universal Power Supply For Laptops In Motor Vehicles
 Cagáň, Adam
This thesis deals with design of DC power supply with adjustable output voltage, workingin buck-boost topology. Thesis explains selection of buck-boost controller integradet circuit and calculationof values of external components. Designed converter is simulated in LTspice software,where parasitic properties of used components are included. There are summarized parameters ofconverter in different working states. Further there are mentioned planned expansions of converter,including microcontroler integration with user interface.
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Switching LED Driver Using Buck-Boost Structure
 Šmerda, Jaroslav ; Kincl, Zdeněk (referee) ; Kubíček, Michal (advisor)
Control and driving high luminous LED is an issue that is dealt, because the technology of LED have grew in recent years. The power of these diodes is supplied almost always with DC converters. These converters operate on the principle of switching power supply, and they are devices with high efficiency. Because of the high efficiency of converters in combination with a high luminous LED leads to very efficient energy processing to light. This project describes how to select the right converter for a specific application of LEDs. There are described basic converter topologies, descriptions of their activities and LED wiring example to the converter.
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