Grob's Basic Electronics provides thorough, comprehensive coverage of all of the important fundamentals of DC and AC circuit theory. It also covers the most common electronic devices and their applications. The book has an endless number of worked-out examples showing detailed step-by-step solutions. Also, a multiple-choice self-test as well as an abundance of homework problems appear at the end of every chapter in the book. New to the 13th edition is a chapter on "Three-Phase AC Power Systems". Also, additional real-world applications have been added to this edition. The book is written for the beginning student who has no previous knowledge about electricity and electronics. A basic knowledge of algebra and trigonometry is beneficial for those students using this book.