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...

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 ...

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&#...

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,&...