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Design and realization of the pull strength measuring device for SMD
Valíček, Jan ; Klíma, Martin (referee) ; Otáhal, Alexandr (advisor)
This thesis deals with the design and implementation of a device for measuring pull strength by surface mounted devices (SMD). It analyzes the theory of pull strength testing of solder joints with emphasis on standard IEC 62137-1-3 and describes the selection of components utilized to create mechanical construction and electrical parts. These electronic parts made or innovated in this work were control system based on microcontroler Atmega164P, power circuit for stepper motor and communication of measure equipment TEST 321 with PC. The whole design is complemented by simulation of mechanical stress to the critical components using ANSYS. The conclusion summarizes the most important parameters of this equipment.
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The multimedia textbook of microelectronic technologies
Černík, Pavel ; Klíma, Martin (referee) ; Adámek, Martin (advisor)
In this bachelor's thesis, there is summary of technological process used in the manufacture of microelectronic circuits. For easier understanding of the processes, there are appended videos, animations and pictures of these technologies. Textbook is created as web pages, that are dynamicaly generated from data stored in MySQL database according to predefined HTML template. Articles and pictures can be added using simple administrative interface.
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The influence of a pre-print thick layer paste viscosity on forming of layer
Ondráček, Michal ; Švecová, Olga (referee) ; Klíma, Martin (advisor)
This bachelor thesis deals with the theory of thick film technology and applying these layers. The work also includes basics of liquid rheology, methods of measurement viscosity and ways of mixing liquids. The main aim is to determine the influence of viscosity of thick film pastes for printing quality of the test structure using screen printing, in particular its flatness and sharpness. The aim is also measure the dependence of viscosity thick film pastes on mixing time.
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Optimization of the printed circuit board for power LED
Schenk, David ; Klíma, Martin (referee) ; Ing. Josef Vochyán, Ph.D., ALCZ Jihlava (advisor)
This diploma thesis deals with the problems of heat transfer on printed circuit boards. The first part consists of a theoretical analysis of the principles of conduction of heat in different environments, comparing the properties of common type’s base materials for PCBs in terms of thermal properties and focuses on heat transfer from the chip. In the following part they are general information about the program ANSYS ® Workbench ™. Next part consists of the basic designs of PCBs and their improving. PCBs thermal properties for different configurations are verified with calculations, simulations and practical measurements. In the last part there are created design recommendations for PCBs design based on the comparison of the results of initial proposals and proposals to improvements.
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The via interconnection in LTCC
Sedliak, Erik ; Klíma, Martin (referee) ; Kosina, Petr (advisor)
This thesis deals with manufacturing process of LTCC 3D structures. Emphasis is placed mainly on the formation of via interconnections. In the second section of thesis, different via interconnections were designed, created and tested. Aim of this thesis was to evalute impact of via properties on vias function.
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Heat pump
Klíma, Martin ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
Bachelor thesis describes and characterizes the heat pump. Summarizes the various types of heat pumps in terms of energy production, principles of their function and description of the differences between different types of compressors, use of refrigerant and its future development. Finally, here is my own view given the heat pump, which I prefer.
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FM Transmitter of APRS Telemetry in 435 MHz Band
Klíma, Martin ; Špaček, Jiří (referee) ; Urbanec, Tomáš (advisor)
FM transmitter APRS of telemetric data is device able to measure telemetric values from its ambient. It is able to send this data to user on earth by radio frequency channel. This device can create data frames, with proper formatting allowing sending data. It operates in 435 MHz band, uses FSK and AFSK modulation. This work describes basic information of used protocols, electronic connection of this transmitter and software equipment.
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