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CONTENTS of PROCEEDINGS
ELECTRONICS
1998
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Book 1 (in English)
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Shoikova E, Innovations
in Bulgarian Higher Education in Electronics
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5
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Dotsinsky I., A. Dos Santos, Nature
and Cancellation of Stimulus Artefact in Motor - Sensory Evoked
Potentials - an Overview
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14
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Andreev B., J.Kolev, Effective
Calculation of Optimal Segmentation of Speech Data for VQ-Based Hidden Markov
Models
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24
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Woerd A., M. Bais, L. Jong, A. Roermund, Self-Sustaining
Power Supplies for Low-power Electronics
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30
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Gospodinova M., B. Nikolova, R. Radonov, M. Hristov, Methodology
for Custom Analog Monolithic Block Design in CADENCE Environment
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49
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Jakimovski G., S. Bogdanova, On
the Representation of Planar Curves Using Wavelet Transform
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55
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Jong P., G. Meijer, An
Accurate Pressure-Transducer Interface for Temperatures up to 275°C
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60
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Kerezov A., R. Ivanov, Resistive
Measurement in the mΩ Range with
Low Level Signal using the Universal Transducer Interface (UTI)
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71
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Kostov M., M. Bogdanov, Chen
and Lee’s Algorithm for the Design of QMF Banks in the Frequency Domain:
Alternative Realization
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76
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Li X., G.Meijer, A
Low-Cost and Accurate Interface for Voltage-Generating Sensors
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82
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Marinov M.,S.Hecht,C.Schilling, Active
Prevention of Biofouling of Microsensors Surface-Practice in Microsystems and
Sensor Education
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87
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Mitrovski Cv., PC
Interface for Gamma Camera Realized with Dio Card
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93
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Mitrovski Cv., L. Kocarev, Chaotic
Encryption Algorithms Based on Modified Digital Filter Structures
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99
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Mihov G., A
‘Modulo N+1/2 Divider’
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105
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Nicula D., Fl.Sandu, C.Gerigan, Hardware
Multiplier Design - One Day from the Idea to the Implementation
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111
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Ovcharov St., M. Bogdanov, Energy
Profiler Software - Architecture and Implementation
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117
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Reitsma G., P. van der Berg, Al. Woerd, Improvement
of the Calculation Accuracy in EM Problems by Preventing Aliasing Errors in
the Numerical Calculation
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122
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Sandu F., D. Nicula, P. Ogrutan, Implementation
for a Virtual Electronics Laboratory
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133
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Sinioros P., A.Krusteva, M.Dimitrov, M.Ivanov, M.Ivanova, Combined
Analysis of the High-Frequency Generator and the Working Capacitor for
Dielectric Heating
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139
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Taskovski D., M. Bogdanov, S. Bogdanova, Image
Compression Using NPR Filter
Banks
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144
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Thijssen A., H. Vink, Two’s Complement
Arithmetic
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150
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Zerbe V., U. Freund, P. Solanti, Towards
Animated Executable Specifications for Satellite Systems
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157
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Book 2 (in English)
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Christov I., I. Daskalov, Filtering
of Electromyogram Artefacts from the Electrocardiogram
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5
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Deneva M., M. Nenchev, R. Barbe, J. C. Keller, A
New Injection Locking Ring Laser Amplifier of a Periodically Modulated Laser
Light Using an Opposite Second Injection
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11
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Dotsinsky I., I. Christov, Mains
Interference Subtraction from ECG in Case of Accompanying Tremor
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16
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Dotsinsky I., I. Daskalov, I. Iliev, Detection
of Peripheral ECG Electrodes Misplacement
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21
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Al Hatib F., I. Daskalov, Asthma
Attacks Monitoring by Electrical Impedance
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27
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Iliev G., M. Momchedjikov, O. Bumbarov, N. Nedev, Restoration
of Pulse Noise Deteriorated Audio Signals
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33
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Ivanova T., Pl.Kostov, S.Sapunova, I.Dandolov, First
Auto-mated Facility for Plant Growth Experiments in Space Research
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39
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Jekova E., Current
Source for Bioelectrical Impedance Measurements
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45
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Kadrev V.,R.Goleva, Analyses
of Correlation Between Cell Delay and Loss in ATM Multiplex with Varying
Queue Length
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51
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Manoilov P., G. Kouzmanov, T. Stefanov, Vl. Momtchilova, A. Popov, Two
Approaches in One for a Quick and Efficient Design of Low Area Custom
Microprocessor Cores. Development of the Ims8NI Core via VHDL and Logic-Synthesis
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57
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Mollova G., Digital
Filters Design with Arbitrary Magnitude and Phase Specifications
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65
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Petrova G., Improvement
of Common Mode Rejection Ratio in Bioimpedance Measurement Using Differential
Synchronous Demodulation
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71
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Popov A., E.Manolov, A
CMOS Schmitt Trigger with Current Controllable Voltage Threshold and Dynamic
Hysteresis
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77
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Popov E., A
New Unified Approach Towards the Analysis of Semiconductor RLC Inverters
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83
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Popov E., Generalized
Characteristics of Semiconductor RLC Inverters
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91
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Rashkov V., Optimum
Processing of Satellite Navigation Signals with Time Delays Separation
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99
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Rashkov V., Accuracy
Characteristics of Satellite Navigation System with Multiplex Synchronisation
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105
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Savov V., T. Todorov, Zh. Georgiev, Limit
Cycles in the Van der Pol-Duffing Equation
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111
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Tchoumatchenko V., T. Vassileva, Rapid
Prototyping Methodology in ASIC Design Education
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117
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Vassileva T., V. Tchoumatchenko, M. Mladenov, I.Astinov, WWW
Based Virtual SPICE Simulator
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123
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Videkov V., A. Andonova, Influence
of Topology on Reliability of Thin Film Resistors
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129
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Spasov G., Sl.Tabakov, P.Trindev, G.Petrova, Determination
of Main Parameters for Development of Picture Archiving and Communication
Systems in Hospital
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134
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Arnaudov D., J. Peichev, B. Blajev, A
Methodology of Organizing the Data Base Archive Information
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140
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Nenov G., I.Georgieva, Influence
of Delay-Free-Loop Elimination on the Transfer Function Sensitivity of
Digital Filters
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146
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Videkov V., M.Mitev, V.Manoev, Hybrid
IC High Voltage Power Supply
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152
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Velichkov G., R. Karov, Perspective
to Control of Three-Phase Electrical Motors with Digital Signal Processors -
DSP
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157
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Karov R., Sv. Ivanov, Inverters
with Reverse Diodes in Frequency Multiplication Mode
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165
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Hinov N., N. Gradinarov, Analysis
of Series RLC Inverters with Reverse Diodes, Working in Aperiodical Mode
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171
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Gradinarov N.,N.Hinov, Analysis
of Series RLC Inverters with Reverse Diodes, Working in
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177
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Gradinarov N.,N.Hinov, Load
characteristics of Series RLC Inverters with Reverse Diodes, Working in
Aperiodical Mode
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183
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Ganchev T., J. Kolev, Researches
for Improvement and Development of Low-Bit-Rate Speech Coding Systems
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187
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Todorov P., V.Todorova, Analog
Functional Converters Based on Piezotransforming Elements with Linear Driving
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193
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Petrova P., V.Todorova, Simulation
of Static Characteristics of NOR TTL Integrated Logic Elements with PSPICE
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200
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Petrova P., Double
Transistor PSPICE Model of a Single Transistor
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206
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Alexandrov A., Theoretical-experimental
Investigation of Galvanomagnetic Converter of Linear movement
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211
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Alexandrov A., P.Todorov, Galvanomagnetic
Converter for Electrical Current Measurement
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217
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Немигенчев И., Вл.Алексиев, Граници
на изменение на коефициент на запълване на управляващите импулси при
регулиране на усилвател в режим клас “Е”
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222
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Tuliev N., P. Avramov, Universal School
Device
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228
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Book 3 (in Bulgarian)
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Hristov M., V. Mladenov, I. Bakalski, VLSI
Implementation of Cellular Neural
Network in CADENCE Environment
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9
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Ruseva J., St. Belev, Sv. Todorova, D. Grigorova, An
Application of Logo! and Logo!Soft in Education
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15
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Petrov B, I.Rouskova, A
Way for Improving Students Motivation During their Electronic Engineering
Education
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21
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Boyanov B., E. Todorov, Direct
Digital Synthesis of Sine Wave Based on Digital Signal Processor
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27
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Boyanov B., E. Todorov, Synthesis
of Random Binary Signals by Genetic Algorithm Optimisation
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33
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Mitev P., A. Angelova, Application
of Software System for Acoustic Analysis for Examination of Laryngeal Cancer
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39
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Stambolieva K, T.Racheva, K.Kostadinov, Stabilografic
Platform with posicion Sensitive Photodetector
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45
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Stambolieva K, V.Grigorova, Quantitative
Analysis of Stabilografic signal
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51
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Grigorova D., Sv. Stoyanov, Some
Aspects of Internet/ Intranet Distance Education
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57
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Dimov V., Modelling
Installation for Research of the Radiation Protective Properties of Materials
in the Training
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63
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Shoikova E., D. Kolev, WEB-Based
Distance Delivery Learning Platform. Specification
and Modelling
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68
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Shoikova E., I. Pandiev, Multilingual
ECAD Glossary - Design and Prototyping
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75
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Borogov N., Design
of Two-Dimensional IIR Digital Filters with Circularly Symmetrical Amplitude
Characteristics using Complex Coefficient Spectral Transformation
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83
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Christov Ch., N. Stoytcheva, M.Semova, Reliability
and Safety Analysis of Dynamic Redundant System
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89
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Gishin St., R. Ivanov, Microprocessor
Management of Electrotechnological Processes
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95
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Stefanova. B. Koen, B. Petrov, High
Accuracy Analog-Digital Logarithmic AND/OR Exponential Converter with
Microprocessor
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101
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Ovcharov St., St. Vichev, V. Velikov, P. Jakimov, Protection
Relays Static and Dynamic Testing
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108
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Ilarionov R., I. Simeonov, Functional
Controller for Primary Converters Information Processing
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114
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Dimitrov I, G. Mihov, A
Structure of Microprocessor Based System for Discrete Manufacture Controlling
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118
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Djamyikov T., M.Marinov, System
for Simulation and Measurement with Integrated Sensors
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124
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Todorov D., Measuring
Instrument of the Real Relative Permeability for Toroidal Ferrite Core
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130
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Nikolova B., M. Gospodinova, Capabilities
for Automated Design of CMOS Integrated Circuits in CADENCE and Design Centre
Environments
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136
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Stoyanov I., B. Nikolova, Design
and Investigation of CMOS Current Mirrors Aided by CADENCE and Design Centre
Integrated Environments
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142
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Stoyanov I., G. Nikolov, Electronic
Devices Measurement Methodology
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148
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Kavalov D., RTL
and Behavioural Descriptions in Synthesising Processor Modules Using
SYNOPSYS’s VDHL
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154
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Goranov P., M. Hristov, M. Goranova, A. Trifonov, A
Controlled Sinusoidal Pulse-width Modulated Signals Generation Method
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160
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Gichev T., R. Angelova, Comparing
the Methods of Theoretical Analysis of the Instantaneous Processes in
Electrical Engineering
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166
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Koichev K., S.Sadinov, Noise
Estimate in Cable TV Line
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172
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Koichev K., S.Sadinov, About
One Possible Way of Modelling a Reference Signal for Time and Frequency
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178
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Zhelezov O., An
Signal Classification Method, Based on Non-Linear Transformation of its
Spectrum
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184
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Petrova P., ARC
Time(-D) Petri nets
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190
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Petrova P., Time
Flow-Related Petri Nets a Dual Approach
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196
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Yudov D, J. Batchvarov, The
Autonomous Inverter Like a Welding Source
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202
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Yudov D, J. Batchvarov, A
DC/DC Converter with Improved Switching Characteristics
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208
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Dimitrov M., P. Mintchev, St. Balinov, Finite
Element Analysis of Induction Heaters for Ferromagnetic Details Using
Magnetic Vector Potential and Impedance Boundary Conditions
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214
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Dimitrov M., P. Mintchev, G. Kanov, V. Jotev, Three
Dimensional Numerical Analysis of the Electromagnetic Field in a Device for
Continuous High Frequency Welding of Tubes
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220
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Ivanov P., D. Aleksiev, R. G. Ivanova, Projecting
of Resonance Inverter with Serial Vibrating Circle
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226
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