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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Metodiky a metody snímání jednorázových dějů / Methods of single impulse detection

Juřík, Vladimír January 2008 (has links)
This thesis deals with measurement method pulsed quantities of electromagnetic field. This thesis was focused on methods, which make use of optic effect. Specially Faraday effect, Pockels effect and magneto-optic Kerr effect. Next it was focused on method makes use of Rogowski coil. At the end was shortly noticed about method makes use of calorimetric sensor. For experimentally realized has been chosen Faraday Magneto-optic Effect. In optic laboratory has been realized absolute methods and different methods making use of Wollaston polarizer on pneumatic optical desk. The main advantage of this method is the capability to measure the high frequency and high current signals. Next in this thesis has been written theory about Rogowski coil. This method has been experimentally realized in laboratory.
2

Vliv magnetického pole na vlastnosti fotovoltaických článků / Influence of magnetic field on photovoltaic solar cell

Kadlec, Michal January 2013 (has links)
This thesis describes the issue of PN junction of photovoltaic cells, photovoltaic effect physics, basic materials used in photovoltaic and their properties, important for the area of photovoltaic. It deals with the problems of magnetism focused on electromagnetic fields. Experimental facility for measuring the influence of magnetic field on the solar cells through the Helmholtz coils was constructed. This work also dealing with the influence of magnetic radiation on photovoltaic cells and the influence of electromagnetic waves on the volt-ampere characteristics of the photovoltaic cell.
3

Modelování šíření elektromagnetického pole v tunelech / Modeling of electromagnetic field propation in tunnels

Géze, Daniel January 2014 (has links)
Cieľom predloženej diplomovej práce je numerické riešenie šírenia elektromagnetických vĺn v tuneli. Za týmto účelom bola sformulovaná integrálna rovnica a numericky riešená pomocou metódy hraničných prvkov (BEM). Implementácia v prostredí MATLAB sľubne poukazuje na nízke výpočtové nároky oproti štandardným diferenciálnych diskretizačným metódam. Súčasťou projektu je vykreslenie rozloženia elektromagnetického poľa pre rôzne profily tunelov. Overenie výsledkov je vykonané pomocou zjednodušeného analytického modelu. V rámci práce je pozorované štúdium vplyvov zmien profilu tunela a rôznych impedančných podmienok na stenách tunela na výsledné rozloženie elektromagnetického poľa vo vnútri tunela.
4

Kvantifikace nejistot měření magnetických veličin / Measurement of magnetic quantities - estimation of the uncertainty

Šlichta, Pavol January 2016 (has links)
This Master’s thesis contains an overview of determining measurement uncertainties of direct and indirect measurements. It describes a way of creating a magnetic field with the help of Helmholtz coil and a more detailed description of some principles of magnetic field sensors. This thesis also contains a description of the experiments and the factors influencing them. The last part deals with the quantification of uncertainties from measured experiments and with the discussion of the results from these measurements.

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