CONTENTS of PROCEEDINGS

ELECTRONICS 2000

 

Book 1 (in English)   

Shoikova E., I. Pandiev, Macromodeling of Operational Amplifier's Power Supply Rejection Ratio Effects

3

Furnadziev I., V. Tchoumatchenko, I.Astinov, Licensing Technology for WEB Based Applications

11

Vassileva T., I. Furnadziev, D. Tenev, V. Vassilev, Virtual Semiconductor Devices Lab

16

Stoyanov G., I. Uzunov, A New Variable Digital Second-Order Elliptic Lowpass Filter Section

21

Van der Zanden P., SONATE, Automatic Look-Over and Analysis of Tests

27

Thijssen L., Modular Design of Digital Circuits

34

Kerkvliet M., G. C. M. Meijer, Capacitive Detection of Liquid in Micro-Canals

40

Li X., G. C. M. Meijer, P. Avramov, M. van der Lee, Universal Sensor Interface

41

Fruett F., G. C. M. Meijer, Stress Sensors Based on the Use of the Piezojunction Effect

47

Panov G., D. Manova, A. Popov, An ECL Circuit with Symmetrical Capacitance-Coupled Active Pull-Down Emitter Follower Stages

53

Apostoaia C., S. Moraru, F. Sisak, A. Craciun, Command Channels Decoupling Circuit of an Embedded Vector Oriented Control System

59

Craciun A., F. Sisak, C. Apostoaia, S. Moraru, Testing the Neliniarities of the Digital to Analog Converters Using Labview Environment

65

Iliev Bl., St. Nihtianov, G. Shterev, G. C. M. Meijer, Interface System for Impedance Measurement Based on a Relaxation Oscillator

71

Shterev G., St. Nihtianov, N. Petrov, G. C. M. Meijer, A System for Testing the Sterility of Food Products with Impedance Measurement

79

Ivanov R., Al. Kerezov, I. Lesichkov, Embedded Systems in Internet

87

Ivanov R., Al. Kerezov, I. Lesichkov, Internet Based Smart Sensors

94

Ivanov R., Al. Kerezov, I. Lesichkov, Intelligent Sensor With CAN Interface

99

Moraru S., C. Apostoaia, A. Craciun, F. Sisak, A Software Approach of the Equipments Quality

105

Sisak F., A. Crãciun, S. Moraru, C. Apostoaia, A Maintenance Expert System

109

Gradinarov N., N. Hinov, D. Arnaudov, A Research of Resonant Inverters with Improved Output Characteristics, working with Zero-Current Switching

113

Popov E., Analysis of a Serial Thyristor Inverter with Forced Commutation

119

Deneva M., M. Nenchev, New Technique for Reliable Generation of Sub-Nanosecond Tuneable Laser Pulses using an Active Cavity Mirror

124

Milicevic M., V. Milicevic, Contribution to the Analysis and Projecting of the Transistor Converter of Power Together with Energy Dosage for the Inductive Heating and Welding of Steel Tubes

129

 

Book 2 (in English)  

Iliev I., V. Krasteva, Energy Measurement of Biphasic Exponential High Frequency Chopped Defibrillation Pulses

3

Krasteva V., Transthoracic Electrical Impedance During External Defibrillation: Assessment of the Nonlinearity

9

Iliev I., Sv. Dojchinov, Measurement of Volume Changes in the Central Retinal Artery

15

Zhekova I., A. Cansell, I. Dotsinsky, Noise Sensitivity of Three Surface ECG Fibrillation Detection Algorithms

19

Zhekova I., An Algorithm for Ventricular Fibrillation Detection

25

Jordanova M., Ts. Dachev, Y. Matviichuk, B. Tomov, Pl. Dimitrov, P. Mishev, V. Yanakiev, O. Ferrer-Roca, D. Hader, P. Kantchev, GSM-Based Mobile Health System

31

Georgieva Ts., G. Mihov, New Approach to Subtraction Filtration of Mains Interference from ECG Signals

37

Stoilov G., Automatic Quality Control

43

Milev M., M. Hristov, A Simple Hardware Model of a Synaptic Function of a Neuron for CMOS VLSI implementation

48

Stoyanov V., Tz. Tzeneva, M. Hristov, Programmable Digital Device for Integrated Hall Sensor Signal Conditioning

53

Tabakov S., G. Radulov, R. Radonov, VHDL Synthesis of XZ8-an 8-bit RISC Processor

59

Nikolova B., A. Andonowa, N. Atanasowa, Variability Analysis of Analog CMOS Circuits

65

Vankov I., L. Dimitrov, B. Kunov, Low Voltage Power Supply System for Endcap Muon Station ME1/1 of the LHC Detector CMS

71

Dimitrov L., B. Kunov, I. Vankov, High Voltage Power Supply System for Endcap Muon Station ME1/1 of the LHC CMS Detector

75

Kunov B., I. Atanasov, L. Dimitrov, I. Vankov, Variable Voltage High Current Linear Stabilizer with High Efficiency

82

Georgiev G., I. Peev, Fast ISA-Bus Multi-Channel Analyzer

88

Gavrovski C., The Application of Different Pulse Detectors in Portable Instruments for Exposure Rate and Dose Measurements

91

Dachev Ts., B. Tomov, Y. Matviichuk, Pl. Dimitrov, Vl. Petrov, V. Shurshakov, Space Radiation Dosimetry System for the Russian Segment of the International Space Station

97

Tsankov L., M. Mitev, Ch. Lenev, Determination of the Absorbed Dose Rate of Week Gamma-Radiation Fields by a Logarithmic Spectral Analyser

103

Atanasov I., V. Genchev, G. Georgiev, DAQ for CMS RPC Chambers Test

110

Karakehayov Zd., Embedded Systems Design with Microcontrollers and FPGA

116

Stefanova K., N. Kafadarova, V. Georgiev, B. Koen-Kukova, Over Some Ways for Measurement of Solar Radiation

122

Kutchoukov V., M. Bao, A. Bossche, Etching Behavior of KOH at the Convex Corner

128

 

Book 3 (in Bulgarian)

Roumenin Ch., D. Nikolov, A Novel Unijunction Magnetic-Field Sensor Using Hall Effect Principle

3

Georgiev A., Using Reliability Data in Servicing Electronic Devices with Controls Units

9

Iliev I., S. Tabakov, Multichanel Device for Bioimpedance Measurement with Logarithmic Characteristic

14

Petrova G., Active Analogue Differentiator for Cardiac Electrical Impedance Signals

19

Petrova G., Influence of Harmonic Distortions in Digital Sine Waveform Generator on the Accuracy in Bioimpedance Measurements

27

Djamiykov T., M. Milushev, N. Krantov, I. Lesichkov, Algorithm for Defining best Integration Time for TSL 401 Family Line Sensor

33

Popov I., A. Georgiev, N. Georgieva, Analysis of the Possibilities for Increasing the Reliability of Stroboscopic Device for Stage Activities

39

Todorova V., M. Mladenov, Primary Signal Processing from Ferroelectric Array Sensor

45

Petrova P., V. Todorova, Simulation of Dynamic Characteristics and Parameters of Nand TTL Integrated Logical Elements Based on PSPICE Macromodels

51

Aleksandrov A., On the Possibilities of Applying Digital Magneto-Sensitive Integrated Circuits

57

Tzeneva Tz., Simulation of Nonlinear Resistance at Bipolar Magnetotransistors modelling

63

Fillyov K., T. Takov, Tz. Tzeneva, Sl. Neytchev, Integrated Hall-Sensor with Dynamic Offset Compensation

69

Hristov M., R. Radonov, M. Ivanova, CMOS IC Specialised for Signal Processing of an Inductive Position Sensor

75

Donchev B., M. Hristov, V. Manoev, Programmable Structures Application in the Electronic Design

81

Tabakov S., Marking, Identification and Product Monitoring method in PCB Saturation of Production Flow

87

Arnaudov R., V. Videkov, N. Iordanov, B. Avdjiiski, D. Damianov, BGA Transitions for Testing of Microwave Chip Carriers and Modules

91

Ivancheva W., P. Belev, Equilibrium Computation for the Vapor Growt of InGaP and InGaAs Alloys

97

Petrov N. I., Method for Analysis on the Spectrum of Signals

104

Petrov N. I., Methods for Determination of the Optimal Circuit Engineering Solution of the Communication Equipment

107

Tsankova R., M. Nejkova, Multidimensional Analysis of test Results in Computer Aided Instruction in Electronics

113

Hristova P., I. Kolev, Modelling of Photoresistor Optron for PSPICE Simulation

119

Manolov E., Application of Microcomputer Spreadsheet Programs in Time-Domain Modeling and Analysis

125

Manolov E., Preliminary Evaluation of the Output Parameter’s Stability in CMOS Integrated Circuit Design

131

Grigorova D., WEB Based System for Foreign Language Training

137

Velikov Y., J. Kolev, Defining the Spectral Parameters of Voice Phonemes in the Bulgarian Language for Speech Synthesis Needs

143

Hristov V., Management for ATM Networks

149

Panagiev O., Non-Linear Distortions and Methods of their Limitation and Reduction in the Cable Television Systems

155

Panagiev O., Some Capabilities of the Optical Technologies in the Cable Television Systems

163

Stoilov G., I. Plachkov, B. Sapundjiev, Functional Test of Cash Register Components

171

Tabakov S., A Program Model and Application of a Library for Graphical Image Processing

177

Mitev M., T. Lenev, System for Registering and Analysis of SBN-90 Data

183

Dinkova M., E. Dinkov, Sp. Arnaudov, High Voltage Power Converter for Dust Fractions Ionization

188

Karakehayova L., A Method for Low-Power System Design

193

Todorov D., Electronic Measurement Device - Architecture of Power Supply

199

Todorov D., Problems with Measurement and Testing of DC/DC Converters

205

Marinov M., T. Djamiykov, Application of Micromechanical Accelerometers for Positioning of Movable Platforms

211

Marinov M., T. Djamiykov, V. Zerbe, Intelligent Data Acquisition Bus Node

217

Djamiykov T., M. Marinov, P. Gugutcov, Illumination Measurement Based on Intelligent Light to Frequency Converter

223

 

Book 4 (in Bulgarian)  

Dimitrov I., G. Mihov, Software and Hardware Architecture of a Controller for Discrete Manufacturing

3

Dimitrov I., M. Ivanov, Software and Hardware Development of a Communication Environment in a Information Control Systems for Discrete Manufacturing

9

Gousheva M., Pl. Angelov, V. Markov, Pl. Hristov, B. Borisov, G. Gdalevich, V. Gubsky, Y. Mikhailov, Project “Monitor”: Current and Field Measurement on Board of The “Meteor-3M/No1-SageIII” Satellite

15

Gousheva M., V. Markov, Pl. Angelov, Pl. Hristov, B. Borisov, Test and Measuring Device for Checking Functionality of a Seismic Activity Satellite Monitoring System and Its Ground-Based Calibration

19

Tabakov S., N. Bankov, V. Stantchev, Study of Transistor Inverter With Hybrid Mechanisms of Commutation in Aperiodic and Critically-Aperiodic Operation Mode

24

Bankov N., S. Tabakov, V. Stanchev, Study of Transistor Inverter With Hybrid Mechanisms of Commutation

31

Bankov N., S. Tabakov, V. Stantchev, Load Characteristics of Transistor Resonant Inverter With Hybrid Mechanisms of Commutation

38

Gradinarov N., N. Hinov, D. Arnaudov, Resonant Inverters with Improved Characteristics for DC-DC Converters

43

Gradinarov N., N. Hinov, D. Arnaudov, Analysis of Resonant Inverters with Limited Voltage on the Comutating Capacitor

47

Ivanov Sv., A Single Transistor Driving Circuit for MCT and MOS FET

56

Krusteva A., P. Sinioros, M. Ivanov, St. Balinov, Research on the Regimes of a High-Frequency Generator for Dielectric Welding of PVC

61

Karov R., Ts. Grigorova, Parallel Works of Links in Resonant Inverters with Capacitance Voltage Limitation

69

Ivanov P., R. Ivanova, Specialised Power Supplies with Lower Power for Induction Heating

76

Madgarov N., Transistor Inverter for Induction Soldering

81

Simeonov M., D. Dankov, G. Goranov, CYCLE-BY-CYCLE Power Control Method Application for Resonant Inverters in Induction Heating

87

Filchev T., D. Yudov, J. Bachvarov, Induction Heating of Fluids

93

Yudov D., T. Filchev, V. Valtchev, Implementation of Inverter Supply in Water Induction Heating System

99

Bachvarov J., D. Yudov, V. Valtchev, Analysis of a DC/DC Converter using an Inverleaved Converter as a Current Source

105

Bachvarov J., D. Yudov, V. Valtchev, T. Filchev, Ripple Analysis of the Signals of Interleaved Converters

111

Angelova R., L. Kolev, T. Gichev, Stepwise Change of Some Parameters in Telegraph Equation

117

Sadinov St., Analysis of Return Loss Coefficient in CATV Amplifiers

123

Sadinov St., K. Koitchev, Optimisation of Gain of Backbone Amplifiers of Cable Television Networks

128

Koitchev K., I. Nedelchev, In Respect of Some Characteristics in Operation of Cable TV Amplifaers

133

Dobrev D., L. Jordanova, Method for Sustaining the Adjacent-Channel Selectivity of a Mobile Receiver

139

Jordanova L., D. Dobrev, A Single-Chip Frequency Converter with a Image-Rejection Channel Phase Suppression

145

Gadjeva E., K. Stefanova, I. Petrov, Analysis of the Total Error of A/D Converters with Input Amplifier

151

Belev S., I. Rousseva, Logical Control Module, Based on CPLD

157

Simeonov St., Speedup Measurement on WINDOWS/NTTM-based Distributed Computing Systems

163

Spasov G., Experimental Wireless Infrared Local Network for Medium Access Control Protocols Investigation

169

Todorov T., Self-Oscillating Systems Synthesis

175

Stoyanov E., S. Stoyanov, P. Yakimov, A. Iovev, The Development of the Quality of Control, Using Cascade Control System in Boilers for Local Central Heating

181

Iovev A., P. Yakimov, E. Stoyanov, S. Stoyanov, Local Heating Control System

187

Kralev K., K. Krustev, A Controller for the Movements and Technological Operations of Coordinating Digital Control Programmes

192

Krusteva R., K. Krustev, A Method for Interpolation in CNC Systems

197

Krustev K., R. Krusteva, Computer Modules for Dynamic Stop of Induction Motors

201

Jordanov St., T. Todorov, System for Control of the Quality of Processing and Monitoring of the Respective Parameters on Electrotechnological Equipment

205

Schindov P., D. Angelova, XRD, XPS and SEM Characterization of Photoconductive CdSxSe1-x Layers Treated in Cu, Ce, Li

211

Schindov P. H., N2 - Laser Processing of Photosensitive Layers of CdS

217

Karov R., Energy Efficiency of the Power Thyristor Converters for Induction Melting

221

Spasov S.I., A.T. Karamishev, Influence of Survey’s Speed on Radar’s Suppress Factor

226