Recommended by the State Committee of the Russian Federation for Higher Education as a textbook for university students studying in the areas of "Electrical engineering, electromechanics, electrotechnology", "Power engineering" and "Instrument making".

In Bessonov's book Theoretical Foundations of Electrical Engineering, Electric Chains, traditional and new questions of the theory of linear and nonlinear electric circuits are considered.

The traditional methods include the calculation of currents and voltages for constant, sinusoidal, pulsed and other types of influences, the theory of two and four-pole networks, electric filters, electric and magnetic lines with distributed parameters, the calculation of transient processes by classical, operator methods, the Duhamel integral method, generalized functions , The Fourier transform method, analog and digital signals, the fundamentals of the signal theory, digital filters, simulated elements and their application, Bruton transformation, Hilbert transform, steady and transient processes in nonlinear electrical circuits, stability of various types of motions, subharmonic oscillations.

Among the new questions included in the course are physical causes, conditions of occurrence and channels of action of nonlinear, implicitly expressed feedback in nonlinear electric circuits of alternating current, leading to the appearance in them of oscillations, called "strange attractors", the method of calculating the steady-state operating mode Generalized alternating current circuit with allowance for higher harmonics, using the principle of diacoptics, the macromethod of the calculation of transients in the bridge rectifier circuit with the pre-connected resistance in the alternating current circuit, the magnetotransistor voltage generator of the meander type, the basic positions of the wavelet transform of the signals, a new approach to the formulation of equations for increments with Study of the stability of periodic processes in nonlinear circuits with a source of sinusoidal EMF, which makes it possible, in a simple way, to reduce the equation for increments to the Mathieu equation, and a number of other new questions.

All the questions of the course are given examples with detailed solutions. At the end of each chapter are questions and tasks for self-examination.