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Relevant bibliographies by topics / Electric circuit analysis

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Academic literature on the topic 'Electric circuit analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

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Journal articles on the topic "Electric circuit analysis"

1

Karpa, Mykhailo, and Vitalii Betsyl. "AUTOMATING COMPUTATIONS FOR ELECTRIC CIRCUIT ANALYSIS WITH LABVIEW." Measuring Equipment and Metrology 85, no. 2 (2024): 33–39. http://dx.doi.org/10.23939/istcmtm2024.02.033.

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The article considers the application of the theory of the complex variable function employing the LabVIEW graphical programming environment for automating the calculation of electric circuits. The software products have been created to implement the method of constructing the matrix of the system of linear algebraic equations by inspection for both the mesh current method and nodal potential method in electric circuits of direct and alternating current and voltage using a graphical programming environment, except for circuits with dependent sources. All developed programs can be converted into .exe files, with subsequent utilization on computers that do not have a program environment installed. These software solutions can help lecturers quickly generate solutions for new assignments, saving valuable time. Students can utilize these software products for self-control, further reducing their workload.

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2

Rahimi, Mohammad, Behrad Soleymani, Farrokh Aminifar, and Amin Gholami. "A New Methodology for Circuit Analysis with Reverse Analysis Capability." Journal of Circuits, Systems and Computers 26, no. 06 (March 5, 2017): 1750101. http://dx.doi.org/10.1142/s0218126617501018.

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This paper presents a novel technique for the analysis of looped linear time-invariant electric circuits. This approach works in both time and Laplace domains; any type of elements could hence be incorporated. The circuit elements are partitioned into twofold classes of basic circuit and subsidiaries. The basic circuit is a spanning tree of the network, and the subsidiaries include circuit elements hypothetically removed from the looped electric circuit to open the loops. The subsidiaries include a suit of passive elements which might not even make any interconnected circuit. The circuit governing equations of flow and energy conservation are manipulated so that branch currents in the subsidiaries and branch voltages in the basic circuit are considered as independent variables to calculate passive element properties (impedance of all passive elements) directly. In contrast to existing methods, this technique is tailored for the circuit analysis in a reverse manner. As a complement for conventional circuit analysis techniques, this method can be taught in the undergraduate program to offer the students an alternative tool for the circuit analysis.

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3

Mihaylenko, V., J. Chunyak, and V. Bachinskiy. "Analysis of processes in converter with eleven zone regulation output voltage." POWER ENGINEERING: economics, technique, ecology, no. 3 (April 6, 2020): 35–40. http://dx.doi.org/10.20535/1813-5420.3.2020.228610.

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Analysis of the electromagnetic processes is organized beside this article in electric circuit with semiconductor commutator . Mathematical model is created for analysis electro-magnetic processes in semiconductor converter with width pulsed regulation of the output voltage. The broughted graphs, which reflect the electromagnetic processes in electric circuit. Method much parametric functions was used when performing calculation. The mathematical model of the converter is created for eleven zoned regulations of the output voltage. Article is devoted to the development of a method of multi-parametric modulating functions by means of working out of new mathematical models and definition of functions and the algorithmic equations for the analysis on sub- system components of electromagnetic processes in electric circuits of variable structure with sinusoidal, direct and pulsing voltage. Introduction of functions with discrete parameters in the algorithmic equations for analysis of processes in circuits with semiconductor commutators simplifies modeling on subsystem components. The mathematical model of steady-state processes and transients in electric circuits of semiconductor converters of modulation type with multi-channel zonal use of phase and line voltages of a three-phase network of power supplies is developed. The mathematical model of electric circuits of thyristor shapers of electro-discharge pulses for the analysis and the matching of capacitors charging modes with decrease several times of electric resistance of technological load is also created. The obtained results have a great value for development theoretical electrical engineering in a direction of simplification of calculations of electromagnetic processes in electric circuits with semi-conductor converters of the electric power. The Electromagnetic processes in electric circuit under width- pulse regulation possible to analyse with use the algorithmic equations multivariable function, which argument are a system parameters semiconductor commutator, signal of control, phases to network of the power supply and time. Introduction multivariable function with discrete parameter in algorithmic equations of the analysis formed and connecting processes in electric circuit of the variable structure allows to reflect change of this structure under system components, simplifying modeling and analysis of such processes to account of the generalization of the got equations. Except specified correlations and diagrams designed model allows to analyse forms of the output voltages and current of the separate power modules.

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4

Batygin, Yuriy, Tetyana Gavrilova, Svitlana Shinderuk, and Evgeniy Chaplygin. "THE RESONANT AMPLIFIER OF THE ACTIVE ELECTRICAL POWER WITH ADDITIONAL VOLTAGE SOURCE. SUGGESTIONS, ANALYSIS, NUMERICAL ESTIMATES." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 3(17) (October 5, 2023): 3–10. http://dx.doi.org/10.20998/2413-4295.2023.03.01.

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The problem of increasing energy saving in industry leads to the need to develop new technical devices. The paper presents and analyzes the circuit of the resonance amplifier of active electric power, evaluates the characteristics of electromagnetic processes for the fundamental substantiation of the operation of real devices based on this circuit. Mathematical analysis of electromagnetic processes taking place was carried out using strict methods of the theory of electric circuits. The advantages of this scheme in comparison with similar previous proposals are shown. The device includes four active-reactive circuits that are inductively connected. The first of them is an input circuit with a harmonic signal source that needs to be amplified. The second circuit generates enhanced reactive power in the "voltage resonance" mode. The third circuit with an additional voltage source provides reactive power output from the second circuit in the "resonance of currents" mode without adverse effects on amplification processes. The fourth circuit, inductively connected to the third circuit, contains an output load - a resistor that simulates the allocation of active power. On the basis of the analysis and numerical evaluation of the characteristics of the processes taking place in the proposed scheme of the resonance amplifier of active electric power, its basic efficiency is shown. The calculations of the experimental model made it possible to formulate recommendations for the selection of circuit elements of a working resonant amplifier with a high efficiency for low-impedance output loads. The considered real parameters of the device make it possible to minimize the dissipation of the energy of converted electrical signals and to increase the amplification factor of the electric power of harmonic currents and voltage by choosing the element base. The obtained results can be considered as practical recommendations for the creation of real devices for amplifying active electric power for use in various industries.

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5

Zhang, Wei. "Quantitative Analysis for Near-Field Characteristics of Converter Circuits." Applied Mechanics and Materials 48-49 (February 2011): 858–62. http://dx.doi.org/10.4028/www.scientific.net/amm.48-49.858.

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With the electric power industrial development, electric power device was abroad using as the core of switch converter. For a clear near-field characterization quantitative electromagnetic interference of converter circuits, this paper applied finite element method to analyze a Boost circuit. Transform topology structure of circuit and build corresponding entity finite element modeling. Quantitative analysis for different topology structure electromagnetic distributing and near-field characteristics, and it become clear that the distribution and the role of electromagnetic field of the circuit through the results. The objective of the analysis is to provide the principle and put a new way for the Layout and component design of the power electronic circuits, at the same time above research works make a foundation for further studying EMI problem of the power electronic devices and are of academically and application worthiness.

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Chatzarakis, George E., P. G. Cottis, Marina D. Tortoreli, P. B. Malatestas, N. J. Kolliopoulos, and Spiros N. Livieratos. "Powerful Pedagogical Approaches for Finding Thevenin and Norton Equivalent Circuits for Linear Electric Circuits." International Journal of Electrical Engineering & Education 42, no. 4 (October 2005): 350–68. http://dx.doi.org/10.7227/ijeee.42.4.6.

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This paper presents two powerful pedagogical approaches for finding Thevenin and Norton equivalent circuits for d.c. linear electric circuits. These approaches are based solely on mesh analysis (for planar circuits) and on nodal analysis (for planar or nonplanar circuits) and simultaneously provide all equivalent circuit parameters from one circuit.

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7

Turner, Matthew. "Evaluation of an Early Three Phase Approach to Electric Circuit Instruction." International Journal of Engineering Pedagogy (iJEP) 7, no. 1 (February 28, 2017): 69. http://dx.doi.org/10.3991/ijep.v7i1.6418.

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This paper presents a novel approach to the study of electric circuits: utilizing three phase electric power systems to introduce students to the techniques of circuit analysis beyond Kirchhoff’s and Ohm’s Laws. The efficacy of the pedagogy is evaluated by comparison of student performance on DC circuits assessment quiz pre and post intervention and by comparison to circuit analysis methods used by experts. Also discusses is how the curriculum effects students qualitative and quantitative conceptions of the behavior of voltage and current in DC resistive circuits.

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Jamaaluddin, Jamaaluddin, Izza Anshory, and Shazana Dhiya Ayuni. "Analysis of Overcurrent Safety in Miniature Circuit Breaker with Alternating Current." Journal of Electrical Technology UMY 5, no. 2 (December 18, 2021): 68–73. http://dx.doi.org/10.18196/jet.v5i2.12508.

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In the utilization of solar energy, the equipment used includes Photovoltaic Cells, solar charging controls, batteries, protection devices, and other measuring devices. This solar power generation system is the name of a system that can convert solar energy into electric power. This solar power plant used in buildings is referred to as the Solar Building System (SBS). To perfect this solar power generation system, it is necessary to manage the electric power protection system. The protection system in this solar power plant includes the use of Miniature Circuit Breakers (MCB). This Miniature Circuit Breaker is a tool for overcurrent protection in alternating current systems and direct current systems. In order to obtain a good protection system for this solar power plant, a study was conducted on the use of a miniature circuit breaker that is effective for a certain type of current. The research method used is the use of alternating current and direct current miniature circuit breakers in alternating current circuits. Observations and recordings were carried out, so that the obtained results were quite significantly different in their use. From the results of the study, it was found that the Miniature alternating current circuit breaker has better characteristics in alternating current circuits, when compared to direct current miniature circuit breakers.

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9

Mykhailenko, Vladyslav, Vadym Svyatnenko, Yuliya Chunyak, and Vladyslav Bachynskiy. "Research of processes in a converter with four-zone voltage regulation and electromechanical load." Bulletin of NTU "KhPI". Series: Problems of Electrical Machines and Apparatus Perfection. The Theory and Practice, no. 1 (5) (May 28, 2021): 39–41. http://dx.doi.org/10.20998/2079-3944.2021.1.07.

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The new mathematical models of the electromagnetic processes is designed in three-phase electric circuit of the semiconductor converters with many-server zoned regulation phases voltages disregarding losses in semiconductor commutator for quick estimation of the influence parameter loads on level and form of the output voltage. mathematical model of the semiconductor converter is also used for study of the connecting processes in semiconductor converter with actively-inductive load. Will develop the method multivariable function, what fall into algorithmic equations of the analysis formed and connecting processes in furcated electric circuit with semiconductor commutator and reactive element, toward account of the particularities of the use phase and linear voltages to network of the power supply. Analysis of the electromagnetic processes is organized beside this article in electric circuit with semiconductor commutator. Mathematical model is created for analysis electro-magnetic processes in semiconductor converter with width pulsed regulation of the output voltage. The broughted graphs, which reflect the electromagnetic processes in electric circuit. Method much parametric functions was used when performing calculation. The mathematical model of the converter is created for eleven zoned regulations of the output voltage. Article is devoted to the development of a method of multi-parametric modulating functions by means of working out of new mathematical models and definition of functions and the algorithmic equations for the analysis on sub-system components of electromagnetic processes in electric circuits of variable structure with sinusoidal, direct and pulsing voltage. Introduction of functions with discrete parameters in the algorithmic equations for analysis of processes in circuits with semiconductor commutators simplifies modeling on subsystem components. The mathematical model of steady-state processes and transients in electric circuits of semiconductor converters of modulation type with multi-channel zonal use of phase and line voltages of a three-phase network of power supplies is developed. The mathematical model of electric circuits of thyristor shapers of electro-discharge pulses for the analysis and the matching of capacitors charging modes with decrease several times of electric resistance of technological load is also created.

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10

Priambodo, Purnomo Sidi, Yosua Adriadi, and Taufiq Alif Kurniawan. "Transformerless SoC-based current control switching battery charger for e-vehicle: design and analysis." E3S Web of Conferences 67 (2018): 03044. http://dx.doi.org/10.1051/e3sconf/20186703044.

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Electric-based vehicles become a necessity in the future to dramatically reduce the effects of pollution. There are various devices involve in the operation of electric vehicles, one of which is a battery charger. This paper discusses the design steps, circuit and ripple performance analysis associated with building a battery charger system. The analysis shows the differences between RL and RC circuits in controlling the output voltage average and the ripples. It shows how RLC mixed circuit improve performance in both controlling the output voltage average and the ripple suppression.

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Dissertations / Theses on the topic "Electric circuit analysis"

1

Manthe, Alicia Louise. "Symbolic circuit analysis : DDD optimization and nonlinearity analysis /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/6082.

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Ma, Hong. "Representation of multivariable-controlled MOSFET nonlinearities in transient analysis programs." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30001.

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This thesis deals with the modelling and circuit simulation problems of nonlinear electronic devices. Emphasis has been aimed at MOSFET devices. A Piecewise Linear (PWL) modelling scheme has been proposed for a general four-terminal nonlinear charge device. The charge functions are all nonlinear and are approximated by PWL functions. If analytical expressions for the nonlinear functions are not available, PWL function approximations can be built from a data table in which discrete data points are recorded. In the time domain, the critical-damping-adjustment (CDA ) scheme is used as the integration rule in the discretization of dynamic charge devices. Piecewise linear modelling combined with the CDA integration scheme gives a fast yet adequately accurate simulation algorithm. The algorithm is based on linear analysis because the entire circuit becomes linear with PWL modelling of nonlinear elements. In order to avoid an iterative solution, PWL region extrapolation is permitted when the circuit solution switches PWL regions. The extrapolation approximation will generate an overshoot error in the solution vector. However, with caution in the selection of the integration step size, the error can be limited to an acceptable range. Two types of MOSFETs have been modelled and simulated with the algorithm introduced in this thesis, and satisfactory results have been obtained as compared to Newton's iteration solutions.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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3

Cakir, Sinan. "Tolerance Based Reliability Of An Analog Electric Circuit." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612929/index.pdf.

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This thesis deals with the reliability analysis of a fuel pump driver circuit (FPDC), which regulates the amount of fuel pumped to a turbojet engine. Reliability analysis in such critical circuits has great importance since unexpected failures may cause serious financial loss and even human death. In this study, two types of reliability analysis are used: &ldquo
Worst Case Circuit Tolerance Analysis&rdquo
(WCCTA) and &ldquo
Failure Modes and Effects Analysis&rdquo
(FMEA). WCCTA involves the analysis of the circuit operation under varying parameters in their tolerance bands. These parameters include the resistances of the resistors, operating temperature and voltage input value. The operation of FPDC is checked and the most critical parameters are determined in the worst case conditions. While performing WCCTA, a method that guarantees the exact worst case conditions is used rather than probabilistic methods like Monte Carlo analysis. The results showed that the parameter variations do not affect the circuit operation unfavorably
operating temperature, voltage input variation and tolerance bands for the resistances are fairly compatible with the circuit operation. FMEA is implemented according to the short circuit and open circuit failures of all the electronic components used in FPDC. The components whose failure has catastrophic effect on the circuit operation have been determined and some preventive actions have been offered for some catastrophic failures.

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4

Cooke, Bradly James. "S-parameter VLSI transmission line analysis." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184876.

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This dissertation investigates the implementation of S-parameter based network techniques for the analysis of multiconductor, high speed VLSI integrated circuit and packaging interconnects. The S-parameters can be derived from three categories of input parameters: (1) lossy quasi-static R,L,C and G, (2) lossy frequency dependent (dispersive) R,L,C,G and (3) the propagation constants, Γ, the characteristic impedance, Z(c) and the conductor eigencurrents, I, derived from full wave analysis. The S-parameter network techniques developed allow for: the analysis of periodic waveform excitation, the incorporation of externally measured or calculated scattering parameter data and large system analysis through macro decomposition. The inclusion of non-linear terminations has also been developed.

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5

Centeno, Virgilio A. "Mimic circuit simulation in real time." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43745.

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6

Yoon, Heebyung. "Fault detection and identification techniques for embedded analog circuits." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/13041.

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7

Groves, James O. "Small signal analysis of nonlinear systems with periodic operating trajectories." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06062008-162614/.

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8

Choi, Pyung. "An equivalent circuit structure macromodel for analog phase locked loops." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/14875.

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9

Jan, Ying-Wei. "A switched-capacitor analysis metal-oxide-silicon circuit simulator." Ohio : Ohio University, 1999. http://www.ohiolink.edu/etd/view.cgi?ohiou1181163717.

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10

Zhou, Chen. "Design and analysis of an active power factor correction circuit." Thesis, Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/53729.

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The design of an active-unity power factor correction circuit with variable-hysteresis control for off-line dc-to-dc switching power supplies is described. Design equations relating the boost inductor current ripple to the circuit components selection and circuit performance arc discussed. A computer-aided design program (CADO) is developed to give the optimal circuit components selection. A 500 watt, 300 volt experimental circuit is built to verify the simulation and analysis results. The control-to-output response of the power factor circuit is verified with the experimental results. Design guidelines for the low-frequency feedback network are presented. Small-signal closed-loop responses are measured with an experimental power factor circuit.
Master of Science

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Books on the topic "Electric circuit analysis"

1

Paranjothi, S. R. Electric Circuit Analysis. 3rd ed. London: New Academic Science, 2010.

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2

E, Johnson David, and Johnson David E, eds. Electric circuit analysis. 3rd ed. Upper Saddle River, N.J: Prentice Hall, 1997.

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3

Bartkowiak, Robert A. Electric circuit analysis. New York: Wiley, 1985.

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4

Boctor, S. A. Electric circuit analysis. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1992.

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5

Wright, Virginia E. Circuit analysis. Hauppauge, N.Y: Nova Science Publishers, 2010.

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6

Johnson, D. E. Electric circuit analysis. 2nd ed. London: Prentice-Hall, 1992.

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7

Ray, Johnson Johnny, and Hilburn John L. 1938-, eds. Electric circuit analysis. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1992.

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8

J, Fowler Richard, and Schuler Charles A, eds. Electric circuit analysis. New York, N.Y: Glencoe, 1993.

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9

Johnson, D. E. Electric circuit analysis. Englewood Cliffs, N. J: Prentice-Hall, 1988.

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10

Kumar, K. S. Suresh. Electric circuit analysis. New Delhi: Dorling Kindersley (India), 2013.

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Book chapters on the topic "Electric circuit analysis"

1

Bigelow, Timothy A. "DC Circuit Analysis." In Electric Circuits, Systems, and Motors, 43–103. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31355-5_3.

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2

Zeng, Gengsheng Lawrence, and Megan Zeng. "Laplace Transform in Circuit Analysis." In Electric Circuits, 171–80. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60515-5_23.

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Zeng, Gengsheng Lawrence, and Megan Zeng. "Fourier Transform in Circuit Analysis." In Electric Circuits, 181–85. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60515-5_24.

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Zeng, Gengsheng Lawrence, and Megan Zeng. "Analysis of a Circuit by Solving." In Electric Circuits, 119–23. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60515-5_17.

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Bigelow, Timothy A. "Phasor-Domain Circuit Analysis." In Electric Circuits, Systems, and Motors, 213–54. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31355-5_7.

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Izadian, Afshin. "Circuit Response Analysis." In Fundamentals of Modern Electric Circuit Analysis and Filter Synthesis, 93–134. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-02484-0_4.

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Izadian, Afshin. "Circuit Response Analysis." In Fundamentals of Modern Electric Circuit Analysis and Filter Synthesis, 173–221. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21908-5_4.

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Silvester, Peter. "The Use of j-Notation in Circuit Analysis." In Electric Circuits, 231–92. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-10540-3_5.

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Morris, Noel M. "Computer Solution of Electric Circuits." In Electrical Circuit Analysis and Design, 349–85. London: Macmillan Education UK, 1993. http://dx.doi.org/10.1007/978-1-349-22560-6_14.

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Zhang, Xi, Chong Zhu, and Haitao Song. "Resonant Circuit Analysis Theories." In Wireless Power Transfer Technologies for Electric Vehicles, 45–55. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8348-0_3.

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Conference papers on the topic "Electric circuit analysis"

1

Hospodka, Jirí, and Jan Bicak. "Web-Based Application for Electric Circuit Analysis." In 2009 Fourth International Multi-Conference on Computing in the Global Information Technology. IEEE, 2009. http://dx.doi.org/10.1109/iccgi.2009.31.

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2

Liu, Xuanxi, ByungJu Bae, Younghoon Cho, Hanyoung Bu, Choiseung Cheol, and Hongchan Ook. "Electric Submersible Pump Equivalent Circuit System Analysis." In 2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia). IEEE, 2024. http://dx.doi.org/10.1109/ipemc-ecceasia60879.2024.10567179.

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Robert, Charlotte, Sylvie Pommier, Stephane Lefebvre, Marion Ortali, and Michel Massiot. "Mechanical Behavior and Damage of Tridimensional Multilayered Ceramics-Tungsten Power Electronic Substrates." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82305.

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Since few years a 3D electric lines is developed. But new applications will be to expose this circuit to high variation of temperature and use them for electronic power. Circuits lines are made of tungsten and insulation in alumina. These materials have different behavior. That difference implies mechanics stress and stress singularities. Some stress concentration can fracture materials or interface between them. Alumina is a brittle material. We need to know his fracture behavior. A statistic model is already used: Weibull model. The idea is to break about hundred samples and to related the probabilities to break of alumina used in the circuit versus stress.

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Wang, Dalong, Zhengbin Wu, Honglei Zhu, Chun Cai, and Fanshui Lu. "Signal Integrity Analysis of Battery Management System for Electric Vehicles." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7257.

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Battery management system (BMS) takes a key role in battery health management and life extension of electric vehicles. It contains various analogue-digital hybrid circuits above the frequency range of several hundred mega-Hertz, where the signal integrity and system stability are probably affected by certain issues of circuit design. In this report, the signal reflections along the transmission lines in a BMS are theoretically simulated and analyzed. The performance of the system is compared to that after optimization both in theory and measurement. The simulation and experimental results verify that electrical impedance matching is most crucial to the signal integrity and system stability in the system design.

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Dodović, Matija, Katarina Stanković, Nikola Ilić, and Jelena Bakić. "SymPyCAP: Software for symbolic analysis of electric circuit." In 2023 10th International Conference on Electrical, Electronic and Computing Engineering (IcETRAN). IEEE, 2023. http://dx.doi.org/10.1109/icetran59631.2023.10192115.

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Burkov, A. F., and V. K. Nguen. "Review and analysis methods of switching electrical circuit of alternating current of electric drivers." In Science of Russia: Goals and objectives. Science of Russia: Goals and objectives, 2023. http://dx.doi.org/10.18411/nrciz-02-2023-17.

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Currently, alternating current (AC) is widely used in technology, as it is easily transformed and transmitted over long distances at high voltage and low losses. In addition, electrical machines and other electrical devices designed to operate in AC circuits are relatively simple and fairly reliable in operation. AC is used in various fields of electrical engineering (electric drive, electrothermal, telecommunications, radio engineering, etc.). Turning on, off, switching, short circuits, changing the direction of current, everything that causes a change in the flow of energy, is a transient process, which is usually characterized by the term "switching". Switching of electrical circuits is called a variety of switching made in all kinds of electrical connections, as well as in cables, wires, transformers, machines, various devices and apparatuses that, in one way or another, generate, distribute and consume electricity. As a rule, switching is accompanied by transient processes that occur as a result of the fact that currents and voltages are very quickly redistributed in the branches of electrical circuits.

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7

Du, Congliu, Rong Hu, Chih-Yu Hsu, and Shuhua Lin. "Algorithms on Analysis of Fault Diagnosis of Electric Circuit." In 2021 IEEE International Conference on Power Electronics, Computer Applications (ICPECA). IEEE, 2021. http://dx.doi.org/10.1109/icpeca51329.2021.9362688.

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Borquez, Javier, Moises Ferber, and Karina A. Barbosa. "Parametric uncertainty analysis of inverse linear electric circuit problems." In 2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON). IEEE, 2017. http://dx.doi.org/10.1109/chilecon.2017.8229577.

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Liu, Minghua, Xiaoyan Wang, and Xudong Wang. "Simulation analysis of pre-charging circuit for electric vehicles." In 2023 IEEE 5th International Conference on Civil Aviation Safety and Information Technology (ICCASIT). IEEE, 2023. http://dx.doi.org/10.1109/iccasit58768.2023.10351599.

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Klontz, K. W., T. J. E. Miller, M. I. McGilp, Haran Karmaker, and Peter Zhong. "Short-circuit analysis of permanent-magnet generators." In 2009 IEEE International Electric Machines and Drives Conference (IEMDC). IEEE, 2009. http://dx.doi.org/10.1109/iemdc.2009.5075338.

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Reports on the topic "Electric circuit analysis"

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Kiv, Arnold E., Vladyslav V. Bilous, Dmytro M. Bodnenko, Dmytro V. Horbatovskyi, Oksana S. Lytvyn, and Volodymyr V. Proshkin. The development and use of mobile app AR Physics in physics teaching at the university. [б. в.], July 2021. http://dx.doi.org/10.31812/123456789/4629.

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This paper outlines the importance of using Augmented Reality (AR) in physics education at the university as a valuable tool for visualization and increasing the attention and motivation of students to study, solving educational problems related to future professional activities, improving the interaction of teachers and students. Provided an analysis of the types of AR technology and software for developing AR apps. The sequences of actions for developing the mobile application AR Physics in the study of topics: “Direct electronic current”, “Fundamentals of the theory of electronic circuits”. The software tools for mobile application development (Android Studio, SDK, NDK, Google Sceneform, 3Ds MAX, Core Animation, Asset Media Recorder, Ashampoo Music Studio, Google Translate Plugin) are described. The bank of 3D models of elements of electrical circuits (sources of current, consumers, measuring devices, conductors) is created. Because of the students’ and teachers’ surveys, the advantages and disadvantages of using AR in the teaching process are discussed. Mann-Whitney U-test proved the effectiveness of the use of AR for laboratory works in physics by students majoring in “Mathematics”, “Computer Science”, and “Cybersecurity”.

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Wheat, Jr., Robert M. Chaos in Electronic Circuits: Nonlinear Time Series Analysis. Office of Scientific and Technical Information (OSTI), July 2003. http://dx.doi.org/10.2172/821547.

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Rourk, C. J. Regulatory Analysis for the resolution of Generic Issue 142: Leakage through electrical isolators in instrumentation circuits. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10187197.

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Payment Systems Report - June of 2021. Banco de la República, February 2022. http://dx.doi.org/10.32468/rept-sist-pag.eng.2021.

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Banco de la República provides a comprehensive overview of Colombia’s finan¬cial infrastructure in its Payment Systems Report, which is an important product of the work it does to oversee that infrastructure. The figures published in this edition of the report are for the year 2020, a pandemic period in which the con¬tainment measures designed and adopted to alleviate the strain on the health system led to a sharp reduction in economic activity and consumption in Colom¬bia, as was the case in most countries. At the start of the pandemic, the Board of Directors of Banco de la República adopted decisions that were necessary to supply the market with ample liquid¬ity in pesos and US dollars to guarantee market stability, protect the payment system and preserve the supply of credit. The pronounced growth in mone¬tary aggregates reflected an increased preference for liquidity, which Banco de la República addressed at the right time. These decisions were implemented through operations that were cleared and settled via the financial infrastructure. The second section of this report, following the introduction, offers an analysis of how the various financial infrastructures in Colombia have evolved and per¬formed. One of the highlights is the large-value payment system (CUD), which registered more momentum in 2020 than during the previous year, mainly be¬cause of an increase in average daily remunerated deposits made with Banco de la República by the General Directorate of Public Credit and the National Treasury (DGCPTN), as well as more activity in the sell/buy-back market with sovereign debt. Consequently, with more activity in the CUD, the Central Securi¬ties Depository (DCV) experienced an added impetus sparked by an increase in the money market for bonds and securities placed on the primary market by the national government. The value of operations cleared and settled through the Colombian Central Counterparty (CRCC) continues to grow, propelled largely by peso/dollar non-deliverable forward (NDF) contracts. With respect to the CRCC, it is important to note this clearing house has been in charge of managing risks and clearing and settling operations in the peso/dollar spot market since the end of last year, following its merger with the Foreign Exchange Clearing House of Colombia (CCDC). Since the final quarter of 2020, the CRCC has also been re¬sponsible for clearing and settlement in the equities market, which was former¬ly done by the Colombian Stock Exchange (BVC). The third section of this report provides an all-inclusive view of payments in the market for goods and services; namely, transactions carried out by members of the public and non-financial institutions. During the pandemic, inter- and intra-bank electronic funds transfers, which originate mostly with companies, increased in both the number and value of transactions with respect to 2019. However, debit and credit card payments, which are made largely by private citizens, declined compared to 2019. The incidence of payment by check contin¬ue to drop, exhibiting quite a pronounced downward trend during the past last year. To supplement to the information on electronic funds transfers, section three includes a segment (Box 4) characterizing the population with savings and checking accounts, based on data from a survey by Banco de la República con-cerning the perception of the use of payment instruments in 2019. There also is segment (Box 2) on the growth in transactions with a mobile wallet provided by a company specialized in electronic deposits and payments (Sedpe). It shows the number of users and the value of their transactions have increased since the wallet was introduced in late 2017, particularly during the pandemic. In addition, there is a diagnosis of the effects of the pandemic on the payment patterns of the population, based on data related to the use of cash in circu¬lation, payments with electronic instruments, and consumption and consumer confidence. The conclusion is that the collapse in the consumer confidence in¬dex and the drop in private consumption led to changes in the public’s pay¬ment patterns. Credit and debit card purchases were down, while payments for goods and services through electronic funds transfers increased. These findings, coupled with the considerable increase in cash in circulation, might indicate a possible precautionary cash hoarding by individuals and more use of cash as a payment instrument. There is also a segment (in Focus 3) on the major changes introduced in regulations on the retail-value payment system in Colombia, as provided for in Decree 1692 of December 2020. The fourth section of this report refers to the important innovations and tech¬nological changes that have occurred in the retail-value payment system. Four themes are highlighted in this respect. The first is a key point in building the financial infrastructure for instant payments. It involves of the design and im¬plementation of overlay schemes, a technological development that allows the various participants in the payment chain to communicate openly. The result is a high degree of interoperability among the different payment service providers. The second topic explores developments in the international debate on central bank digital currency (CBDC). The purpose is to understand how it could impact the retail-value payment system and the use of cash if it were to be issued. The third topic is related to new forms of payment initiation, such as QR codes, bio¬metrics or near field communication (NFC) technology. These seemingly small changes can have a major impact on the user’s experience with the retail-value payment system. The fourth theme is the growth in payments via mobile tele¬phone and the internet. The report ends in section five with a review of two papers on applied research done at Banco de la República in 2020. The first analyzes the extent of the CRCC’s capital, acknowledging the relevant role this infrastructure has acquired in pro¬viding clearing and settlement services for various financial markets in Colom¬bia. The capital requirements defined for central counterparties in some jurisdic¬tions are explored, and the risks to be hedged are identified from the standpoint of the service these type of institutions offer to the market and those associated with their corporate activity. The CRCC’s capital levels are analyzed in light of what has been observed in the European Union’s regulations, and the conclusion is that the CRCC has a scheme of security rings very similar to those applied internationally and the extent of its capital exceeds what is stipulated in Colombian regulations, being sufficient to hedge other risks. The second study presents an algorithm used to identify and quantify the liquidity sources that CUD’s participants use under normal conditions to meet their daily obligations in the local financial market. This algorithm can be used as a tool to monitor intraday liquidity. Leonardo Villar Gómez Governor

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Payment Systems Report - June of 2020. Banco de la República de Colombia, February 2021. http://dx.doi.org/10.32468/rept-sist-pag.eng.2020.

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With its annual Payment Systems Report, Banco de la República offers a complete overview of the infrastructure of Colombia’s financial market. Each edition of the report has four objectives: 1) to publicize a consolidated account of how the figures for payment infrastructures have evolved with respect to both financial assets and goods and services; 2) to summarize the issues that are being debated internationally and are of interest to the industry that provides payment clearing and settlement services; 3) to offer the public an explanation of the ideas and concepts behind retail-value payment processes and the trends in retail payments within the circuit of individuals and companies; and 4) to familiarize the public, the industry, and all other financial authorities with the methodological progress that has been achieved through applied research to analyze the stability of payment systems. This edition introduces changes that have been made in the structure of the report, which are intended to make it easier and more enjoyable to read. The initial sections in this edition, which is the eleventh, contain an analysis of the statistics on the evolution and performance of financial market infrastructures. These are understood as multilateral systems wherein the participating entities clear, settle and register payments, securities, derivatives and other financial assets. The large-value payment system (CUD) saw less momentum in 2019 than it did the year before, mainly because of a decline in the amount of secondary market operations for government bonds, both in cash and sell/buy-backs, which was offset by an increase in operations with collective investment funds (CIFs) and Banco de la República’s operations to increase the money supply (repos). Consequently, the Central Securities Depository (DCV) registered less activity, due to fewer negotiations on the secondary market for public debt. This trend was also observed in the private debt market, as evidenced by the decline in the average amounts cleared and settled through the Central Securities Depository of Colombia (Deceval) and in the value of operations with financial derivatives cleared and settled through the Central Counterparty of Colombia (CRCC). Section three offers a comprehensive look at the market for retail-value payments; that is, transactions made by individuals and companies. During 2019, electronic transfers increased, and payments made with debit and credit cards continued to trend upward. In contrast, payments by check continued to decline, although the average daily value was almost four times the value of debit and credit card purchases. The same section contains the results of the fourth survey on how the use of retail-value payment instruments (for usual payments) is perceived. Conducted at the end of 2019, the main purpose of the survey was to identify the availability of these payment instruments, the public’s preferences for them, and their acceptance by merchants. It is worth noting that cash continues to be the instrument most used by the population for usual monthly payments (88.1% with respect to the number of payments and 87.4% in value). However, its use in terms of value has declined, having registered 89.6% in the 2017 survey. In turn, the level of acceptance by merchants of payment instruments other than cash is 14.1% for debit cards, 13.4% for credit cards, 8.2% for electronic transfers of funds and 1.8% for checks. The main reason for the use of cash is the absence of point-of-sale terminals at commercial establishments. Considering that the retail-payment market worldwide is influenced by constant innovation in payment services, by the modernization of clearing and settlement systems, and by the efforts of regulators to redefine the payment industry for the future, these trends are addressed in the fourth section of the report. There is an account of how innovations in technology-based financial payment services have developed, and it shows that while this topic is not new, it has evolved, particularly in terms of origin and vocation. One of the boxes that accompanies the fourth section deals with certain payment aspects of open banking and international experience in that regard, which has given the customers of a financial entity sovereignty over their data, allowing them, under transparent and secure conditions, to authorize a third party, other than their financial entity, to request information on their accounts with financial entities, thus enabling the third party to offer various financial services or initiate payments. Innovation also has sparked interest among international organizations, central banks, and research groups concerning the creation of digital currencies. Accordingly, the last box deals with the recent international debate on issuance of central bank digital currencies. In terms of the methodological progress that has been made, it is important to underscore the work that has been done on the role of central counterparties (CCPs) in mitigating liquidity and counterparty risk. The fifth section of the report offers an explanation of a document in which the work of CCPs in financial markets is analyzed and corroborated through an exercise that was built around the Central Counterparty of Colombia (CRCC) in the Colombian market for non-delivery peso-dollar forward exchange transactions, using the methodology of network topology. The results provide empirical support for the different theoretical models developed to study the effect of CCPs on financial markets. Finally, the results of research using artificial intelligence with information from the large-value payment system are presented. Based on the payments made among financial institutions in the large-value payment system, a methodology is used to compare different payment networks, as well as to determine which ones can be considered abnormal. The methodology shows signs that indicate when a network moves away from its historical trend, so it can be studied and monitored. A methodology similar to the one applied to classify images is used to make this comparison, the idea being to extract the main characteristics of the networks and use them as a parameter for comparison. Juan José Echavarría Governor

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