ELECTROTECHNICA & ELECTRONICA E+E
Vol. 49. No 7-8/2014
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA
C O N T E N T S
ELECTRONICS
Vol. 49. No 7-8/2014
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA
ELECTRONICS
The block-diagram of equipment for measuring the velocity of detonation in non-electrical waveguides for blasting is developed. Calibrated time intervals between two pulses corresponding to the specified distance between the ...
The creation and development of the anechoic chamber for automatic antenna measurements in the Department of Communication Engineering and Technologies at Technical University of Varna since mid 1970’s to now days is described ...
In the paper a problem of spatial signals filtration with high selectivity is discussed. To approximate the ideal array factor – Kronecker-δ, approximation method of compressed cosines is used. The approximation with third-degree ...
With sensor-based demand controlled ventilation the ventilation rates are controlled through signals from indoor and outdoor air sensors and so better control of the indoor pollutant concentration and lower energy consumption ...
Control of the soldering process and failure analysis are an important part of quality assurance at today manufacturers of electronic components and assemblies. Many methods exist – non-destructive and destructive, each ...
In most lasers with optical excitation essential element of the emitter except the active environment and optical resonator is a converter of electrical energy in the exciting light radiation – gas discharge or halogen ...
The electrocardiogram (ECG) is often contaminated with interferences such as drift and tremor. The subtraction procedure has proved its efficiency in removing interferences from the ECG. Development process of such device ...
In the paper work are shown results from researching of a single transistor Buck-Boost ZVS DCDC Quasi-Resonant Converter. Initially an analysis of the electromagnetic processes in the power part of the circuit has been made. ...
2012-2023