This book introduces electric circuits with variable loads and voltage regulators. It allows to define invariant relationships for various parameters of regime and circuit sections and to prove the concepts characterizing these circuits. Generalized equivalent circuits are introduced. Projective geometry is used for the interpretation of changes of operating regime parameters. Expressions of normalized regime parameters and their changes are presented. Convenient formulas for the calculation of currents are given. Parallel voltage sources and the cascade connection of multi-port networks are described. The two-value voltage regulation characteristics of loads with limited power of voltage source is considered. The book presents the fundamentals of electric circuits and develops circuit theorems. It is useful to engineers, researchers and graduate students who are interested in the basic electric circuit theory and the regulation and monitoring of power supply systems.

Autorentext

A. Penin was born in 1952. He graduated from Radio Department Polytechnic Institute in 1974, Odessa, Ukraine.

His engineering interest relates to power electronics. Between 1980 and 2006 he worked in the design office of solid-state electronics of Academy of Sciences of Moldova; the elaboration of power supply systems.

Ever since 2006 he has been working in the Institute of Electronic Engineering and Nanotechnologies of Academy of Sciences of Moldova; he continues the early begun, 70-th years, the independent theoretical researches in the electric circuit theory with variable regimes. He is a senior research assistant, PhD (2011).

Inhalt

Introduction.- Operating regimes of an active two-pole. Display of projective geometry.- Generalized equivalent circuit of an active two-pole with a variable element.- Two-port circuits.- Paralleling of limited capacity voltage sources.- Operating regimes of an active multi- port.- Recalculation of load currents of multi-ports.- Cascaded four-port circuits.- Generalized equivalent circuit of a multi-port.- Regulation of load voltages.- Stabilization of load voltages.- Pulse- width modulation regulators.