Plamen Angelov

Plamen Angelov
Burgas Free University · Faculty of Computer Science and Engineering

PhD

About

23
Publications
10,160
Reads
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1
Citation
Additional affiliations
April 2001 - present
Burgas Free University
Position
  • Professor (Associate)

Publications

Publications (23)
Conference Paper
Full-text available
The aim of the proposed article is to make a comparative analysis of the switching losses in power stage Class D amplifiers. This method uses specific parameters of the output stage, whose aim is to define the output efficiency. Out of the numerical experiments we can adequately identify the switching losses of the output stage according to the typ...
Conference Paper
Full-text available
In the article we will present a comparison between the international norms for non-ionizing radiation and comparative analysis with the norms of Bulgaria. The concept in this paper is to show the limit emission levels for non-ionizing radiation. In order to make comparison is necessary to define the tasks that be conducted. In the first part will...
Conference Paper
Full-text available
In a few words – If you interested in a method how IR-Detectors or Proximity Detectors work , send and receive data using IR-Light. How it work, through communication between transmitter and receiver ,and what scheme to use
Article
Full-text available
The point of this article is the critical analysis of the linear high efficiency audio amplifier. This type of amplifier is a combination of the above two types which provides an acceptable level of THD performance (typically 0.1% to 1% distortion [1]) at similar output efficiency. Of this kind audio amplifier, both output devices are allowed to co...
Conference Paper
Full-text available
The subject of the present article is the study of a new feedback method of analysis by the harmonics correction of the signal. The present article offers some possible solutions of achieving this feedback correction while using a PC Scope. The emphasis is laid on a practical solution in the study of the harmonic component of the signal.
Conference Paper
Full-text available
The subject of the present article is the study of a new feedback method of analysis by the harmonics correction of the signal. The present article offers some possible solutions of achieving this feedback correction while using a PC Scope. The emphasis is laid on a practical solution in the study of the harmonic component of the signal.
Conference Paper
Full-text available
This report presents a Time(-d) Petri Net based model of a hypothetical car security system with RF remote control unit. Our suggestion possess most important features found on such type of systems realized with set of buttons -arm, disarm and silent. The Petri Net-oriented techniques with interval timing are used for our design purposes to reach a...
Conference Paper
Full-text available
Measuring of Gain Frequency Response (GFR) has always been a challenge to audio engineers. Multiple model solutions have been made and due to them the amplitude characteristic is reported in different ways. At first, several input frequencies are set and the output results are reported. The data obtained are recorded in a table and then are put in...
Conference Paper
Full-text available
The study of Gain Frequency Response (GFR) in low frequency range of 20 kHz sets higher requirements for the development of practical measuring. After a period of development, the AudioPrecison [1] company developed many professional devices [2] for the study of the Gain Frequency Response of Low Frequency Amplifiers (LFA). Many of these devices co...
Conference Paper
Full-text available
In the present article we concept a modified method which indicates the spectum of the signal. The present schematic analyzes the input low frequency signal and visualizes the " sample " results into the LED matrix structure. In this kind of project we have a compensation of the amplitude of the signal.
Conference Paper
Full-text available
The subject of the present article is the study of a new method of analysis by the introduction of a reversing correction of the signal. The present article offers some possible solutions of achieving this reversing correction while using a PC Scope. The emphasis is laid on a practical solution in the study of the harmonic component of the signal....
Conference Paper
Abstract: In this article we present a measurement of the power density of the electromagnetic field in different areas of the town of Burgas. The measurement is done with portable speciramanalyzer ..Spectran PROFI packet - FRO BUNDLE - FTF6080" onto which the maximum of the package communication is recorded. The implemented research measured the p...
Conference Paper
Abstract: In this article we present a comparison of the recommended value of the electromagnetic field. In most of the cases when the standards of the radio spectrum are examined, reference values from organizations such as TCNTRP, F.C, BimSchG are used. Tn a number of published standards a maximum limit of tolerance in long-term irradiation in tw...
Conference Paper
Abstract: In this article we present an examination of the value of electromagnetic intensity at various points on the territory of the town of Burgas. Measurements of the level ofradiation were made when a GSM conversation was in progress. Analyses and valuation of the results are presented. Spectra! distribution of various sources of radiation is...
Article
Full-text available
The material examines the students' activity and their attitude towards self-study. This can clearly prove how they can apply the knowledge acquired. Undoubted in this case is the practical experience. This article is specifically concerned with this method. Practical experience, acquired by the student is being examined concerning its flexibility...
Article
Full-text available
The measurement and control of the non-linear distortion has always been a challenge with the qualitative reproduction of the audio signal. There are many methods and ways to determine the bad signal level. Some of the methods suggest filter separation of the useful signal and preserve only the unwonted distortion value. It is impossible to make a...
Article
Full-text available
The point of this article is the critical analysis of the method to determine the efficiency at linear audio amplifiers. The parameter efficiency shows the maximum advantage of the power supply with minimal lose. The present article shows the critical analysis of the method [1] to define the power consumption and enhances its advantages and disadva...

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