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Solar cell non-destructive analysis
Černý, Michal ; Škarvada, Pavel (referee) ; Macků, Robert (advisor)
This thesis briefly analyse contemporary situation of photovoltaic systems and their actual developemenet. It shows a typical properties of most produced up-to-date types. Decision point of this thesis consist in nondestructive analyse of monocristalic unijunction solar cells. It describes two main diagnostic aproaches. First – through the use of measuring of VA characteristics, second – through the use of measuring noise characteristics. With selected samples are performed experimental measurements and estabilished basic parameters. In case of drone analysis considerably attention is devoted to experimental equipment for automatized measuring of spectral power density. This experimental equipment is consequently used for measuring some samples where we can observe microplazmatic noise.
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Optimization and parameter measurement of PON network FTTX
Černý, Michal ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
Práce rozebírá současný vývoj na poli pasivních optických sítí a jednotlivé generace přenosových standardů. Podrobněji se zabývá parametry ODN, metodami jejich měření a volbou potřebných měření v praxi. Hlavní část práce je zaměřena na měření pasivního WDM prvku, kde je provedena analýza vstupů a výstupů, měření vložného útlumu a přelechů podle ORL na provozních vlnových délkách.
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Design of hydraulic travel of reaper`s drive unit
Galda, Martin ; Černý, Michal (referee) ; Brandejs, Jan (advisor)
The goal of my bachelor work is Design of hydraulic travel of reaper`s drive unit on exploration of facts with these parameters: independent wheel drive, fluent speed regulation in both forward and reverse motion, speed 0-10 km/h. Briggs&Stratton I/C OHV AVS engine is used for working the machine. It's output is 8,46 kW. Dakr, s.r.o, company demanded, that approximately 20% of engines output is to be used for driving.
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