National Repository of Grey Literature 21 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Optimization of the switching power supplies with synchronous rectifier
Skácel, Josef ; Macháň, Ladislav (referee) ; Žák, Jaromír (advisor)
This thesis deals with switching circuit topic, especially switching power supplies. There are switching circuits without inductance and their benefits presented in the thesis. Basic topologies of switching power supplies, their properties, application area and functions of basic types of converters are also described. The next section focuses on special resonant switching power supplies and synchronous. The main part of the work is carried out simulations using three synchronous rectifiers. The work includes practical design of an SMPS with synchronous rectifier.
Network datalogger
Maštálka, Daniel ; Žák, Jaromír (referee) ; Šteffan, Pavel (advisor)
Work is about theoretical proposal of network datalogger, which logs indoor and outdoor temperature and humidity. As microcontroler is used development kit STM32 Value Line Discovery and for comunication with server is used Ethernet protocol. As primary display is used remote access to server, as secondary alphanumeric liquid crystal display.
Intelligent versatile charger
Veteška, Michal ; Macháň, Ladislav (referee) ; Žák, Jaromír (advisor)
The theoretical part deals with the theory of batteries. The principle of Nickel-cadmium (NiCd), Nickel-metalhydride (NiMH) and lithium (Li-Ion) batteries are described. The principles of proper charging and weaning of these batteries are also described. The proposal and construct NiCd and NiMH batteries charger, consisted of the three parts and the switching power supply, controller and chargers is included in the practical part of this work.
Optimization of the switching power supplies with synchronous rectifier
Skácel, Josef ; Macháň, Ladislav (referee) ; Žák, Jaromír (advisor)
This thesis deals with switching circuit topic, especially switching power supplies. There are switching circuits without inductance and their benefits presented in the thesis. Basic topologies of switching power supplies, their properties, application area and functions of basic types of converters are also described. The next section focuses on special resonant switching power supplies and synchronous. The main part of the work is carried out simulations using three synchronous rectifiers. The work includes practical design of an SMPS with synchronous rectifier.
The Sport Activity Digital Recorder
Raninec, Michal ; Žák, Jaromír (referee) ; Macháň, Ladislav (advisor)
This paper discuss the design of multifunctional device used as the digital recorder for sport activity. The general aim is to explore theory issues, construct the device and develope software for the application. Components were chosen considering low weight and power consumption and with as accurate tracking as possible.
Multipurpose measuring device
David, Jan ; Žák, Jaromír (referee) ; Levek, Vladimír (advisor)
This thesis describes the design of portable multi-purpose measuring device with Microcontrollers from Microchip running on battery power, for displaying the measured signal uses a graphical LCD with a resolution of 240x128. The device is equipped with an oscilloscope and multimeter with auto range.
Reverse recovery in power integrated circuits
Šuľan, Dušan ; Žák, Jaromír (referee) ; Boušek, Jaroslav (advisor)
Předkládaná práce se zabývá parametrem “Reverse Recovery Time“ u polovodičových prvků a jeho vlivem na typické spínací obvody. V první části práce je objasněno co je “Reverse Recovery Time“ a jeho jednotlivé části. V další sekci je popsána jeho fyzikální podstata. Na konci teoretická části je rozebrán jeho efekt na spínací ztráty a doporučená metoda měření tohto parametru . Praktická část práce je zaměřena na simulace Dpdr45nres45 v prostředích Cadence a TCAD. Poslední část se zabývá návrhem obvodu na měření u reálných diod a samotným měřením diod a tranzistorů.
Development of the Versatile Industrial Manipulator
Veteška, Michal ; Pekárek, Jan (referee) ; Žák, Jaromír (advisor)
The theoretical part deals with the basic division of industrial robots, their structure and working space. It analyzes propulsion using the industrial robots and sensors required to operate in the robot. The practical part describes the design of a mechanical arm for an industrial robot manipulator. The practical part also includes a description of the sensor and a description of the control unit.
Smart Nightstand Device
Vávra, Jan ; Žák, Jaromír (referee) ; Macháň, Ladislav (advisor)
Master’s thesis describes design of smart nightstand device. Aim of this system is to monitor and recognize stages of sleep with subsequent transfer of the data to alarm clock to provide the most comfortable awakening. The alarm clock is backed up by batteries. The system controls parameters of surrounding environment using advanced sensors. The device is equipped with a removable light part which is backed up by power supply for illumination during a potential power outage. A pad for wireless charging with standard Qi is also part of this system.
Development and optimization of system for measuring of watering
Kašpárek, Petr ; Macháň, Ladislav (referee) ; Žák, Jaromír (advisor)
The main goal of this thesis is to become acquainted with questions of sensors and the problems of measuring the plant watering. The result is creating an intelligent prototype of a module that should measure temperature, conductivity and pH of the watering. Automatic measuring of these properties makes the parameter evaluation easier and quicker. This measuring module extends contemporary device with the possibility to measure properties of the plant watering.

National Repository of Grey Literature : 21 records found   1 - 10nextend  jump to record:
See also: similar author names
11 ŽÁK, Jakub
11 Žák, Jakub
3 Žák, Jan
3 Žák, Jaroslav
12 Žák, Jiří
4 Žák, Josef
1 Žák, Jozef
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