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Economic encapsulation for integrated circuits and modules
Kristek, Michal ; Jankovský, Jaroslav (referee) ; Szendiuch, Ivan (advisor)
This Master´s thesis is about ways of packages of integration circuits and modules. Especially it´s about non-hermetic types of packages. One part of this paper are basic information about packaging and aspects in design of package. Next parts are design of test samples, which are package to epoxide powder material. Based on the results of the tests method, it will propose, where the technology will be used.
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The portable device for aroma detecting in food industry
Beneš, David ; Jankovský, Jaroslav (referee) ; Adámek, Martin (advisor)
This work deals with the construction of a simple cheap portable device that allows the measurement and recognition of aromas in food industry using semiconductor gas sensors with the ability to share measurement data to a remote server. The device is controlled by Arduino development platform, enriched by two modules. Work shortly apprises readers with aroma monitoring in food industry and development board Arduino which contains ATMega series microcontroller and with module for network communication. This work also includes a measurement sample and review using the proposed circuit.
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Controlled rectifier bridge
Kučírek, Martin ; Řezníček, Michal (referee) ; Jankovský, Jaroslav (advisor)
This bachelor's thesis is concerned with problems of monophasic full-wave rectifiers - describes the components used in wiring monophasic full-wave uncontrolled rectifier (Graetz rectifier) and controlled with power MOSFETs and IC LT4320 in the theoretical part. The practical part explains manufacturing process controlled rectifier bridge in the form of embedded system. On the final product is carried out measurement and comparison with commercial uncontrolled monophasic full-wave rectifier.
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Switch stereo low frequency signals
Lukesle, Václav ; Jankovský, Jaroslav (referee) ; Hejátková, Edita (advisor)
The work proposes steps for fabricating low-frequency preamplifier including switchable inputs and the output equalizer. In the beginning of the thesis theoretical principles of amplifying the low-frequency signals are introduced. For setting the resonance frequency of equalizer the gyrator filter has been used. By setting the aforementioned frequency and tuning the potentiometer we are able to change the quality factor as well as the gain of the entire circuit. Benefit of this work is a large flexibility for tuning the output signal including a possibility of selection of four various inputs. Simulation and measurement results, PCB and a summary of discrete components are finally attached.
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Experimental Investigation of Integrated Thick Films
Čejka, Marek ; Jankovský, Jaroslav (referee) ; Szendiuch, Ivan (advisor)
This bachelor thesis deals with the theory of thick film technology. It describes implementation of thick layer integrated circuits, thick film technology, creen printing method. It includes basic electrical properties of thick layers. The aim of this work is the experimental work deals with the detection of current rating of conductors. The work includes the design of method of measuring and test structure.
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Electrical properties of thick film pastes measured in a wide temperature range
Gajdoš, Jiří ; Jankovský, Jaroslav (referee) ; Řezníček, Michal (advisor)
The aim of this master’s thesis is to investigate the electrical properties of various thick-film resistor pastes in a wider temperature range. The thesis mainly focuses on a change in electrical resistance depending on temperatures, which extend to the cryogenic region. To achieve this, there is an overview of the thick-film technology properties, major technological procedures, principles of resistive pastes conductivity, methods of electrical resistance measuring, possible errors in measurement and methods of their minimization. The content of this work is also familiar with the characteristics of a cryogenic station, on this foundation was proposed the measurement procedure and created thick-film circuits for this station. After measurement in the interval 10 K to 350 K, there are subsequently evaluated the data and explains the principles of the conductivity of used pastes.
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New ways in Packaging
Hřešil, Tomáš ; Jankovský, Jaroslav (referee) ; Szendiuch, Ivan (advisor)
This project deals with the creating a base of manual for modern electronic packages, which are more and more used in today's electronic circuits and devices. The modern packages are mentioned small outline DIL, QFP, BGA, PGA, CSP, Flip chip. The work is also including packages known SiP (System in Package) that are consisting or use the combinations of packages BGA, PGA, CSP and Flip Chip. At the end of the work are short described the most important design rules for assembly of mentioned packages on substrate (PCB).
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Conductive net designing for thick film circuits
Strejček, Jindřich ; Řezníček, Michal (referee) ; Jankovský, Jaroslav (advisor)
Bachelor’s thesis was intent on determination the current rating thick film circuits. Describes an intelligent current source with voltage measurement function and its control. Contains a description of testing to test the test structure and processing of its results. From the evidence in trial testing was formed a new test structure, which was used for testing the current rating thic film conductors. Also copper conductors testing was performed. From measured values were drawed the graphs which represents current rating coductors in depend on width and temperature change of conductor.
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