Global ETD Search

11	Univerzální napájecí zdroj s mikrokontrolérem / General-purpose power supply with microcontroller Jorda, Ivo January 2014 (has links) The aim of this thesis is design of adjustable switched mode power supply with symmetrical output of 25 V, and switched mode power supply with fixed output voltage of 5 V. Required maximum output current of each outputs is 3 A. At the beginning of the paper function of the basic SMPS topologies is described. Next all reqiured SMPSs are designed and chosen parts of the design are simulated. In the second half of the thesis assembly and testing of PCB are described as well as functions of programs. Last chapter contains results of meassurement of power supply paramters.
12	Tapped-Inductor Buck DC-DC Converter Chadha, Ankit January 2019 (has links) No description available. Electrical Engineering Tapped-inductor buck Steady-State Analysis Open-Loop Response Closed-Loop Response Small-Signal Model Linear Large-Signal Model High Step down converter Buck Converter
13	Pracoviště pro dynamické testování solárních článků / Worpllace for dynamic testring of solar cells. Hanák, Kamil January 2009 (has links) This work deals with method for characterization of photovoltaic solar cells based on evaluation of solar cell response to fast transients. The voltage of the cell in both forward and reverse polarisation was controlled by current pulse exciting. Real reverse breakdown voltage and exact value of serial resistance of the cell can be obtained easily by evaluation of the transient curves recorded by digital osciloscope. By negotiation of the time constants of the cell response to excitation in forward polarisation the lifetime of minority carriers in semiconductor bulk can be estimated.
14	Řízený zdroj napětí a proudu připojitelný přes USB / USB controlled voltage and current source Pytela, Ondřej January 2015 (has links) This diploma thesis is focused on complete construction of lab source which is controlled and powered by USB in personal computer. Different types of possible solutions are mentioned and finally one of them has been picked up as a best choice, which is developed in the rest of this thesis. Besides hardware construction there is also shown creation of main program for PIC18F14K50 microcontroller and main application that provides controlling of USB source via personal computer.
15	Konvertor pro příjem digitálních družicových snímků v pásmu L / L-band frequency converter for reception of the digital meteorological images Bürger, David January 2017 (has links) Down converter is a mixer which have a three ports. Two ports are refered as input ports and one port is ouput. One input port is connected to a signal which is transmited by meteorological satellites at frequency 1,7 GHz this frequency falls within the L–band. Meteorogical images are trasmited in L-band. The second input port is connected to a local oscillator in this case voltage control oscillator. The output signal includes sum and differential products, for down conversion is logically used differential product. Down conversion is used to convert data that are transmitted at high frequency to lower frequency which can be futher processed and then displayed data on the end device.
16	Střídač pro trojfázový motor / Iverter for three-phase motor Mikuška, Martin January 2014 (has links) This master’s thesis goes into design of particular circuits for three phase inverter. Inverter’s control is ensured by digital signal controller MC56F8013 with his program. Principle of control is suggested for individual motors. Inverter design considerate universal use and capability for any three phase motor. Particular blocks are compatible each other.

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