The Electric Chains of Sinusoidal Current . Theory and calculation using computers Manual ", created by a team of authors, is an indispensable resource for students, engineers and anyone interested in electrical engineering and electronics. This tutorial immerses the reader in the world of sinusoidal currents and electrical circuits, offering not only the theoretical foundations, but also the practical skills necessary to successfully solve problems in this field. The book details key concepts related to sinusoidal currents, including their mathematical description, analysis, and calculation of electrical circuits. The authors share their knowledge of various methods of analysis, such as the method of node voltages and the method of contour currents, and also explain how to apply computer programs for modeling and calculating electrical circuits. This makes the manual especially valuable for those who seek to master modern technologies and use them in their practice. Who can like this tutorial? First of all, it will be useful for students of technical universities studying electrical engineering, as well as graduate students and young professionals who want to deepen their knowledge in the field of electrical circuits . In addition, the book will be of interest to teachers who are looking for quality materials for their courses, as well as practicing engineers who want to update their knowledge and skills in the light of new technologies. The topics raised in the book cover a wide range of issues, including analysis of linear and nonlinear chains, resonance phenomena, and methods of measurement and diagnosis. The authors emphasize the importance of understanding the physical processes occurring in electrical circuits, which allows the reader not only to solve specific problems, but also to develop critical thinking and analytical abilities. The book also touches on the issues of stability and reliability of electrical systems, which is relevant in the light of modern requirements for the quality and safety of electrical equipment. The style of the authors is distinguished by the clarity and accessibility of the presentation, which makes complex topics understandable even for beginners. They use many examples and tasks, which helps the reader to better absorb the material and apply it in practice. This tutorial is not only informative, but also inspires further study of electrical engineering and electronics. If you are looking for literature that will help you master the electrical circuits of the sinusoidal current, then this manual will become your reliable assistant. It can be useful both for self-study and as training material for courses and seminars. The book may also be of interest to those who are looking for information about modern methods of calculating and modeling electrical circuits using computers. In conclusion, "Electrical chains of sinusoidal current. Theory and calculation using computers is not just a book, but a whole world of knowledge that will open up new horizons in the field of electrical engineering. If you want to become an expert in this field or just improve your skills, this guide will be your faithful companion on the way to success. Do not miss the opportunity to immerse yourself in the fascinating world of electrical circuits and sinusoidal currents - this book is waiting for you!