This book “The Text Book of Electronics” is written on the basis of syllabus of BSc Vth sem students of 10+2+3 system of Guru Nanak Dev University Amritsar. It also meets the requirements of those who want to gain good understanding of electronics. The utmost priority has been laid on lucidity and conciseness of topics. For a lucid presentation of the concepts and principles, the book has been well illustrated with self descriptive diagrams. Many essay-type, short answer type questions and numerical problems including those appeared in different university examinations are given as exercise in each chapter.