National Repository of Grey Literature 84 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Lead-free solder joint and environmental impacts
Kudláček, František ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
The aim of this bachelor thesis is to determine the effect of low-temperature lead-free solder during the aging process. The theoretical part deals with the types of lead-free solders and solder pastes used for the production of electrical circuits. In the practical part we deal with the design and measurement of the PCB. For our analysis, we pay more attention to the solder paste type Sn42Ag1Bi57 and its temperature profile. A four-point measurement method is used for evaluation, which shows us the difference between the measured values.
Wettability of pins with different surface treatments
Fabiánek, Marcel ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
The master thesis is devoted to the problem of wetting of lead components. It outlines the problems of soldering, solder joint formation. It looks at the area of pin wetting, which will be tested by the method of wetting scales and the formation of an intermetallic layer at the solder-pin interface. The formation of intermetallic layers will be observed on copper contacts electroplated with another metal.
Electrochemical Migration of Flux Residues and Sirface Insulation Resistance Changes
Hájka, Jan ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
This thesis deals with electrochemical migration on printed circuit boards induced by flux residues. In the theoretical part of the thesis, the theory related to electromigration is discussed and the mechanisms of each type are described. The theory of fluxes is elaborated, focusing on the VOC-free fluxes Pacific 2009 mlf and Kester 979 T. In the practical part, the fabrication of test PCBs is described and the reproducibility of the fabrication process is observed. Furthermore, a methodology for testing the effect of flux residues on the surface insulation resistance according to the relevant standard is proposed. The proposed methodology is applied to compare the above mentioned fluxes and surface treatments.
FR4 base material - evaluation of flame retardant properties
Růžička, Miroslav ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
This work examines the flammability material FR4 (EN 61248-2-8) from different manufacturers, comparing their self-extinguishing properties to the standards and information from the manufacturer. Assesses the impact of latitude and longitude leads to the maximum possible current load associated with the occurrence of burning and compares the influence of the examined solder mask materials FR4.
Electrolytes based on sulfolan and similar solvents
Máca, Josef ; Zatloukal, Miroslav (referee) ; Sedlaříková, Marie (advisor)
Submitted thesis deal with study of aprotic electrolytes in order to increase the safety for use in lithno – ionts accumulators. Increase of safety is specified by measuring the flash point of each electrolytes, at the same time are evaluated also other parameters important for use in accumulators. For determine the window of temperatures where the electrolytes can work is measured by melting point. The melting point is measured by cryoscopy. From electrical properties is measured specific conductivity of the electrolyte.
Solderability of PCBs Surface Treatments and Environmental Influences
Jičínský, Jiří ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
This bachelor’s thesis deals with the properties of surface treatment of printed circuit boards. The main purpose of this work is to compare the OSP coating applied under laboratory conditions and the technological procedure established in the company ČEMEBO Blansko. Samples of ENIG, immersion tin and OSP compare due to their critical aspects. In the practical part, the samples au exposed to various elements of nature according to ČSN EN 60068-2. The surface wetting balance method will be used for better comparison and evaluation.
Analyse and Optimise Production Process of Prototypes
Hamr, Tomáš ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
This diploma thesis summarizes basic findings about issues of making development samples of PCB. The emphasis is especially on required quality which complies with mentioned norms. The theoretical section includes methodology for evaluating quality dismounted boards, assembling and soldering, parameters of components under different environmental circumstances. The practical part is carried out in cooperation with the department EEG in R&D Automotive Lighting Jihlava. It is dedicated to the design and the preparation of development samples where the quality is assessed according to given methodology from the theoretical part. PCB are analyzed by an X-ray, metallographic grinding and other methods. Recommendations are given and based on results for improvements.
Optimization of the solar system designed for DHW school canteens heating
Doskočil, Filip ; Zatloukal, Miroslav (referee) ; Bača, Petr (advisor)
Masters’s thesis describes the use of solar energy for solar thermal systems used for domestic hot water heating. It is about the size of the incident solar radiation on Earth. Distributes various types of solar collectors for water heating. It deals with the monitoring, remote management of this system and the design of optimal control used in this area.
Production of Multilayer PCB
Janda, Ondřej ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
This master thesis introduces the problematics of multilayer printed circuit boards. Theoretical part is focused on materials used for production of multilayer PCB and their parameters. At the same time, it focuses on the pressing process of multi-layered PCB, the types of presses used and their advantages and disadvantages. Practical part describes the methodology and testing of the PCB to identify the reliability of chosen electrical parameters. Testing is aimed to simulate thermal stress during machine soldering and during thermal stress in the target environment.
Flammability aprotic electrolytes for lithium systems
Máca, Josef ; Zatloukal, Miroslav (referee) ; Sedlaříková, Marie (advisor)
Submitted thesis deal with study of flammability aprotic electrolytes and measuring theirs flashpoint. Definition flashpoint in depending on solvent mixtures and presents of nanoparticles in electrolyte for lithium systems. Thesis deal with conductivity measurement and her changes depending on the proportino of solvents and level and type of nanoparticle too.

National Repository of Grey Literature : 84 records found   1 - 10nextend  jump to record:
See also: similar author names
1 ZATLOUKAL, Miroslav
7 Zatloukal, Marek
4 Zatloukal, Martin
1 Zatloukal, Miloš
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