Electronic Devices and Circuits: Fundamentals and Applications BY Dr. A. Gangadhar, Dr. P. Pushpalatha, Dr. R. Gurunadha,Dr. M. Hema

The rapid advancement of electronics and semiconductor technology has profoundly transformed modern science, engineering, and everyday life. From communication systems and consumer electronics to computing platforms, medical instrumentation, and intelligent automation, electronic devices and circuits form the fundamental building blocks of contemporary technological innovation. A strong understanding of these core principles is therefore essential for students, researchers, and practicing engineers alike.

The book Electronic Devices and Circuits: Fundamentals and Applications has been carefully designed to provide a comprehensive and systematic introduction to the theory, design, analysis, and practical implementation of electronic devices and circuit systems. The primary objective of this multi-author volume is to bridge the gap between foundational concepts and real-world engineering applications, enabling learners to develop both conceptual clarity and practical problem-solving skills.

This book begins with the basic principles of semiconductor physics and device operation, gradually progressing toward diodes, transistors, biasing techniques, amplifiers, oscillators, and digital and integrated circuits. Emphasis has been placed on clear explanations, mathematical analysis, circuit modeling, and application-oriented examples to ensure a smooth transition from theory to practice. Modern developments and emerging trends in microelectronics, VLSI, embedded systems, and low-power circuit design are also introduced to align the content with current technological demands.

As a collaborative effort, this work brings together the knowledge, teaching experience, and research expertise of multiple academicians and professionals. Each author has contributed specialized insights from their respective domains, ensuring that the text maintains both academic rigor and practical relevance. Care has been taken to present the material in a structured, student-friendly manner supported by diagrams, solved examples, exercises, and case studies to enhance understanding and reinforce learning outcomes.

This book is intended primarily for undergraduate and postgraduate students of Electronics and Communication Engineering, Electrical Engineering, and allied disciplines. It also serves as a valuable reference for faculty members, competitive examination aspirants, and industry professionals seeking a concise yet thorough understanding of electronic devices and circuit applications.

We sincerely acknowledge the support of our institutions, colleagues, and students whose encouragement and feedback played a significant role in shaping this manuscript. We also extend our gratitude to reviewers and the publishing team for their constructive suggestions and assistance during the preparation of this book. Finally, we express our heartfelt thanks to our families for their patience, motivation, and unwavering support throughout this endeavor.

We hope that Electronic Devices and Circuits: Fundamentals and Applications will serve as a reliable guide, inspire deeper learning, and contribute meaningfully to the academic and professional growth of its readers.