Číslo 3 (2013) Collection home page

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Collection's Items (Sorted by Submit Date in Descending order): 1 to 4 of 4
Dončuk, Jan , Mentlík, Václav , Velek, Jiří , Ullman, Ivo
Úroveň vývoje plynů jako diagnostické hledisko stavu výkonových transformátorů

The article deals with the gas development and detection ways of the gases dissolved in oil generated during the power transformer's operation. The attention is paid mainly to generation of the gases that are characteristic for particular types of failures. The most used diagno...

Vacek, L. , Petržela, Jiří
Hardwarové řešení přepínání šířky pásma u radioreleových spojů

This paper briefly describes possible circuit implementation of switching bandwidth property in the case of the radio relay connections. It is shown that this problem can be solved by a set of SAW filters. The design of corresponding device is described in step-by-step manner ...

Chrobák, Petr
Ortogonální multiplex s kmitočtovým dělením

The article should familiarize readers with broadband technology that uses frequency division modulation channel OFDM (Orthogonal Frequency Division Multiplexing). Currently, the increasing demands for quality digital signal transmission in both radio and television broadcasts. Unlike other modulations, which&#...

Prajzler, Václav , Lyutakov, Oleksiy
Optické vlastnosti epoxydové pryskyřice dotované ionty vlastních zemin

The paper deals with the properties of rare earth ions doped polymer layers. Polymer Epoxy Novolak Resin was doped with erbium, erbium/ytterbium and dysprosium ions. The layers were fabricated by spin-coating on silicon and quartz substrates. We have investigated infrared (IR) spectra,&...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 4 of 4