CONTENTS

 

 

                                                                                          

BOOK 1 - Circuits and Systems, Education in Electronics
ISSN  1313 - 1842

Shoikova E., I. Pandiev, Improved SPICE macromodels of instrumentation amplifier with PSRR effects

3

Gadjeva E., Durev V., Extraction of parameters of planar spiral inductors using genetic algorithms

11

Gadjeva E., V. Durev, Extraction of parameters of planar transformers using genetic algorithms

17

Yordanov Al., Sinusoidal and impulse generator, built on the bases of a direct digital synthezer

22

Mihova B., An approach to automatic circuit design using general-purpose circuit simulators

27

Koleva E., I. Kolev, Optocoupler circuits with electrical and optical feedbacks

33

Koleva E., I. Kolev, Development of avalanche phototransistor optocouplers and circuits with avalanche phototransistor optocouplers

37

Angelov G., K. Asparuhova,Optimization and simulation of the EKV model using MATLAB

42

Monov I., I. Gorchev, Computer based remote control for layout of scaled model trains

47

Soran I., I. Sztojanov, Some methods to improve the evaluation of amplitude spectrum given by FFT

53

Stefanova K., I. Petrov, B. Koen, Non-linear distortion of digital sinewave generator with step and step-linear approximation

59

Jordanova L., J. Nenkov, Optimization the architectures of the CATV networks to providing the video-on-demand service

63

Antonova O., M. Hristov, E. Gadjeva, Application of general-purpose circuit simulators to automated design and investigation of class E power amplifiers

69

Georgiev Z., T.Todorov, E. Manolov, I. Karagineva,Synthesis of sinewave oscillator based on the modified Van der Pol equation using melnikov theory

74

Manolov E., T. Todorov, Z. Georgiev, I. Karagineva, Design of FPAA prototype for practical studying of modified Van der Pol equation

79

Angelov Pl., A dynamic measure of harmonic distortions

85

Angelov Pl., A method to define the losses in audio-amplifier class D

91

Tsenov G., S. Terzieva, P.Yakimov, V. Mladenov, Modeling and implementation of third order sigma-delta modulator

96

Panagiev O., Ultralinear super trunk amplifiers

103

Panagiev O., Algorithm for calculating of the nonlinear products’ amplitudes from order n

109

Stefanova S., R.Gercheva,Simulation and program realization of recursive digital filters

115

Brusev T., P. Goranov, M. Hristov, Investigation of ZCS resonant-switch DC-DC converter for fully monolithic IC implementation

121

Shickalanov D., Calculation of weighed average estimation marks by means of spreadsheet

127

Skorpil Vl., Simulation of ADSL for needs of education

133

Shterev Pl., Automated generation of partially reconfigurable modules and their communication infrastructure

137

Radonov R., V. Videkov, Some peculiarities of the e-management environment, version 6

143

Tanchev I., R. Dimova, T. Georgieva, V. Draganov, LAN simulator program by local segment – LANSS

149

Shoikova E., M. Ivanova, A. Peshev, SharePoint server 2007 deployment for electronics education

155

 

 

BOOK 2 - Electronic Medical Equipment, Embedded Systems, Power Electronics             ISSN  1313 – 1842

 

Andreev A., Grid computing in help of medical electronics

3

Dobrev D., T. Neycheva, N. Mudrov, Digital lock-in techniques for adaptive power-line interference extraction

9

Vasileva D., I. Iliev, E. Dimitrov, Muscle effort degree measurement

15

Dotsinsky I., G. Mihov, Tremor suppression in the electrocardiogram

19

Mihov G., R. Ivanov, Ch. Levkov, Subtraction method for removing a powerline interference from ECG : case of powerline frequency deviation and non-multiple samlping

27

Petrova G., G. Spasov, I. Rachev, H. Iliev, ADC module for mechanical myo-tonometry signals processing

33

Rachev I., G. Petrova, Design of a Matlab toolbox for mechanical myo-tonometry signals processing, analyzing and visualization

39

Iliev I., S. Tabakov, Homecare announcement system for people having injures

44

Jekova I., I. Christov, L. Todorova, Difference-based parameter set for local heartbeat classification: ranking of the parameters

49

Jekova I., V. Krasteva, Time and frequency domain analysis of five heartbeat types

55

Neycheva T., T. Stoyanov, High-resolution front-end for ECG signal processing

61

Krasteva V., I. Iliev, Automatic analysis and visualization of multilead long-term ECG recordings

67

Karakehayov Z., Z. Monov, Space division multiple access for wireless sensor networks

73

M. Shopov, H. Matev, G. Spasov, Evaluation of Web services implementation for ARM-based embedded system

79

Kakanakov N., E. Kostadinova, G. Spasov, Using SNMP for remote measurement and automation

85

Mihov S., D. Dimitrov, K. Stoyanov, D. Doychev, Embedded system for video and signal processing

91

Skorpil Vl., Error rate modelling

97

Gîrniţă M., Tracking filters in multisensor fusion

103

Gîrniţă M.,Two tracking filters analysis

110

Mihov V., E. Dinkov, Dynamic non-overlap commutation control in switching regulators

116

Mihov V., E. Dinkov, AC-AC power converters – overview and application

121

Popov E., L. Pindeva, Electrical design of three-phase bridge diode rectifiers with active-capacitive load by MATLAB

127

Dankov D., M. Simeonov, Resonant driver circuit for MOSFET’s and IGBT control in class-DE Inverter

133

Petkova M., Antchev M., Influence of input inductance over dynamic characteristics of single-phase shunt active power filter

139

Gurgulitsov V., M.  Antchev, M. Petkova, Special operation features of the output transformer of series active power filters

145

Karamanski P., T. Hristov, Improving the parameters of an inductional surface hardening for one frequency and different specific powers per cm2

151

Veselinov Vl., GPRS system for monitoring of break - down and transient processes at current source parallel inverters

155

 

 

BOOK 3 - Electronic Systems in Measurement and Control, Quantum and Nuclear Electronics  -  ISSN  1313 - 1842

 

Tsankov L., M. Mitev, A simple method for stabilization of arbitrary spectra

3

Mitev M., Å. Dimitrov, Dosimetric control system for a nuclear electronics training laboratory

9

Todorova P., M. Deneva, M. Nenchev, Two-colour coaxial active media Nd3+:YAG-Ruby flash lamp pumped and Q-switched optical quantum generator

15

Topcu S., Y. Alaily, N. Kaimakanova, M. Deneva, M. Nenchev, Development of a two-wavelength CW red semiconductor lasers in original resonator architectures

21

Stanchev A., St. Ovcharov,The power quality and the measurement of harmonics

28

Molnár K., P. Kovár,  Low-level process modelling in the  OPNET Modeler simulation environment

35

Heidary A., Meijer G.C.M., Analysis and design of an integrated interface for leaky capacitive sensors with emphasis on humidity sensors

41

Chang Z., G.C.M. Meijer, The noise performance of evaluation boards for a universal transducer interface with USB connection

47

Kohbod K., G.C.M. Meijer, Analysis and design of CMOS smart temperature sensor (SMT) with duty-cycle modulated output

53

Lozanova S., Ch. Roumenin, CMOS Hall sensor for subsequent magnetic-field components measurement

59

Nikovski Pl., I. Maslinkov, Transient response and time characteristic of one capacitive interface circuit in case of fractality

65

Simeonov I., S. Yordanov, Acoustic control of the technological processes

71

Yordanov S., St.Ivanov,  A. Rashidov, Process control in a system of serial connected bioreactors

77

Shterev G., Calibration of the measuring instruments for inclination angle

82

Nikolova B., G. Nikolov, SPICE modeling of Taguchi sensors

87

Nikolov G., B.Nikolova, M. Marinov, Hazardous gas monitoring using VI server

93

Zezulka F., O. Hyncica, Ethernet technology in automation

99

Katrandzhiev N., Algorithm for correction of primary
spectrometric data

105

Stoyanov P., V. Markov, M. Mihov, G. Kiprov, Space based radiolocation systems - present state and perspectives for development

111

Nabavi M.R., St. Nihtianov, A survey of eddy current displacement sensors: imperfections and signal conditioning methods

116

Nojdelov R., St.Nihtianov, Capacitance meter

123

Dimitrijević M., V. Litovski, Implementation of compact switching power supply with high power factor

129

Draganov V., Zl. Stanchev, I.Tanchev, Improvement possibilities of the device for measuring of small capacities

133

Jivkov I., M. Alexandrova, D. Dimov, R. Kalinova, V.  Nikolova, Vl. Denishev, Computer controlled setup for precise electrical measurements – a step towards the virtual instrumentation

139

Mitev M., E. Nazarova, E. Dimitrov, A. Zahariev, J. Georgiev, Automated system for investigation of resistance temperature dependence of high temperature superconductors

145

Yakimov P., St. Ovcharov, N.Tuliev, E. Balkanska, Investigation of electronic instruments and methods for Web-based energy management system development

151

Djamiykov T., M. Milushev, M. Marinov, Optic sensor for the joint of a walking robot

157

Donkov Y., T. Djamiykov, A. Rusev, Tachometer – cyclometer with programmable logic

163

Zhekov Z., G. Mardirossian, Petar Stefanov Getsov, Research of the transferring characteristics of a scanning spectrophotometer

168

 

 

BOOK 4 - Micro- and nanoelectronics, Technologies in Electronics
ISSN  1313 - 1842

 

Coccetti F., D.Peyrou, M.Al Ahmad, P.Pons, D.Dragomirescu, H.Aubert, R.Plana, MEMS/NEMS technologies for ambient intelligence

3

Athanassov Al., The little transistor and the CCAS revolution

9

Cané C., P. Ivanov, F. Blanco, I. Gràcia, L.Fonseca, N. Sabaté, E.Figueras, J. Santander, Micro and nanotechnologies for food safety applications

19

Pergoot A., E. Saramov, The new exciting and challenging requirements to the automotive suppliers of Si and modules

29

Prokop R., Vl. Musil, New modular current devices for true
current mode signal processing

36

Prokop R., L. Fujcik, ASIC for electro-chemical sensor conductivity measurement using bipolar pulse method

43

Melikyan V., A. Martirosyan, A. Matevosyan, S. Chobanyan, Congestion control algorithm for network on chip traffic

49

Melikyan V., D. Petrosyan, T. Petrosyan, The I/O output buffer automated design with consideration of simultaneously switching noises

55

Panayotov I., Behavior modeling of elements of the structure of analog array

59

Panayotov I., T. Brusev, M. Hristov, Ph. Philipov, Behavior modeling of DC/DC buck converter

65

Kavadarova N,, A, Andonova, Georgiev G., Investigation of the thermal interaction between an isothermal cylinder and its isothermal enclosure of an electric junction

71

Andonova A., E. Gadjeva, P. Draganska,G. Pavlov, I. Marinov, Modified compact model of MOSFET working under ESD stress

75

Ivanova M., D.l Donoval, J. Marek, A. Vrbicky, The influence of fabrication steps on selected properties of power DMOS transistor

79

Partinova S., T. Takov, Design and production of precise thick film circuits using photolithographic technology

85

Rusev R., B. Atanasov, T. Takov, M. Hristov, Nano semiconductor devices, including molecular semiconductors

91

Nikolić M., M. Savić, P. Petković, The self-bias PLL in standard CMOS

97

Jovanović B., P. Petković, M. Damnjanović, Serial port interface for microcontroller embedded into integrated power meter

103

Anđelković B., M. Dimitrijević, V. Litovski, Using grid computing in parallel electronic circuit simulation

109

Strijkova V.,  I.Zhivkov, E. Spassova, J. Assa, I. Tsenov, Gencho V. Danev, Influence of preparation conditions on vacuum deposited polyimide layer properties and applicability

115

Boyadjiev St., M. Rassovska, WO3 thin films deposition on quartz crystal resonators for applications in gas sensors

121

Prasek J., M. Adamek, J. Hubalek, O. Jasek, L. Zajickova, Thick-film electrochemical sensor with deposited carbon nanotubes

125

Prasek J., M. Adamek, J. Krivka, Examination of the thick-film electrochemical sensor electrodes properties

131

Jivkov I., M. Alexandrova, R. Kalinova, C. Jossifov, E. Runenkina, G. Dobrikov, M. Rassovska, “Tailored” conductivity of segmented polydiphenylacetylene thin films for microelectronc application

137

Dobrikov G., M. Rassovska, S. Boiadjiev, K. Gesheva, P. Sharlandjiev, A. Koserkova, Microstructure and optical properties of ITO thin films investigated for heat mirrors in solar collectors

143

Adamek M., J. Prasek, Some aspects in thick-film capillary production

148

Adamek M., J. Prasek, 3-D electrodes design for thick-film sensors

153

K. Denishev , M. Petrova, Accelerometer design

159

K. Denishev , B. Trencheva, Micropumps for medical applications

165