issue 11-12

20191112-full
Issue 11-12, 2019

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 54. No 11-12/2019
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20191112-full

C O N T E N T S

ELECTRICAL ENGINEERING
Ana Vučković, Mirjana Perić, Dušan Vučković, Nebojša Raičević, ...  read more

20191112-01
Magnetic force calculation of U-shaped permanent magnet and linear magnetic plane
Ana Vučković, Mirjana Perić, Dušan Vučković, Nebojša Raičević, Saša Ilić

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Magnetic force between U-shaped permanent magnet and linear infinite plane is determined in the paper. Two different cross-sections (circular and rectangular cross section) are considered in the paper in order to analyse their ...  read more

20191112-02
Experimental validation of the frequency multiplexing method of simultaneous wireless transmission of energy and information signals
Lyudmil Petkov, Nikolay Madzharov

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Wireless energy transfer and bidirectional transfer of information and control signals, using the same inductive connection, has been a current topic of research in recent years. Depending on the required transmitted power ...  read more

20191112-03
Blockchain in the telecom industry
Boyan Jekov, Petya Petkova, Elena Shoikova

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This article looks at the introduction of Blockchain technology in the telecoms industry. Blockchain is one of the disruptive technologies that is rapidly entering all sectors of the industry, economy and life. This article ...  read more

20191112-04
The old news in 2019 in infrastructure and network legislation
Kamena Tsaneva, Darina Stoyanova

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The article discusses old news in the Bulgarian 2019 infrastructure and network legislation.

Старите новости през 2019 в инфраструктурното и мрежовото законодателство.


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 ...  read more

20181112-full
Issue 11-12, 2018

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 53. No 11-12/2018
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20181112-full

 

C O N T E N T S

ELECTRICAL ENGINEERING

Vikas Gakwad, Angel Tcolov, Ivan Yatchev
Analysis of Typical Faults in the real grid of 22 kV Roha town feeder (India) 279

Plamen Tzvetkov, Krasimir Galabov, Ivan Kodjabashev
Some features and opportunities for calibration of analyzers of electric power by total harmonic distortion 285

Ivaylo Nedelchev
Hysteresis loss analysis of magnetic materials with data acquisition system 289

ELECTRONICS

Atanas Tanev


 ...  read more

20181112-01
Analysis of typical faults in the real grid of 22 kV Roha town feeder (India)
Vikas Gaikwad, Angel Tcolov, Ivan Yatchev

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The fault analysis and evaluation of fault voltage and current in the power system network is very important for a stable and reliable operation of the power system. In the present paper, a study of various reasons for faults ...  read more

20181112-02
Some features and opportunities for calibration of analyzers of electric power by total harmonic distortion
Plamen Tzvetkov, Krasimir Galabov, Ivan Kodjabashev

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The possibility for evaluation of the quality of electrical energy for the purpose of calibration of analyzers is considered by using a periodic square-wave pulse signal instead of the traditionally used harmonic signals. ...  read more

20181112-03
Hysteresis loss analysis of magnetic materials with data acquisition system
Ivaylo Nedelchev

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Magnetic materials are widespread in many fields of the electronics and electrical engineering. The most of them take place in the constructions of transformers, coil cores, electromagnets, measurement sensors etc. Thus, their ...  read more

20181112-04
Overview of gyrator based Gm-C filters and their applications
Atanas Tanev

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This paper reviews gyrator based Gm-C filters and their characteristics. The most common gyrator based Gm-C filter architecture is described. Different types of gyrator biquad are presented as well as ...  read more