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

Electronics has become the cornerstone of modern science and technology, driving innovation across communication systems, computing platforms, healthcare devices, automation, renewable energy, and intelligent systems. From the invention of the semiconductor diode and transistor to the rapid development of integrated circuits and smart electronic systems, the field of electronic devices and circuits continues to evolve at an extraordinary pace. A strong understanding of the fundamentals of electronic components and circuit design is therefore essential for students, educators, researchers, and practicing engineers alike.
Electronic Devices and Circuits: Fundamentals and Applications has been developed as a comprehensive and student-centric resource that bridges theoretical principles with practical implementation. This multi-author volume brings together the collective expertise of academicians, researchers, and industry professionals who have contributed their specialized knowledge to create a balanced, in-depth, and application-oriented text. Each chapter reflects the experience and insight of its contributors, ensuring clarity, rigor, and relevance to contemporary technological needs.
The book begins with a systematic introduction to semiconductor physics and the working principles of fundamental electronic devices such as diodes, bipolar junction transistors, field-effect transistors, and power devices. It then progresses to the analysis and design of analog and digital circuits, covering amplifiers, oscillators, rectifiers, filters, and integrated circuits. Emphasis is placed on circuit modeling, biasing techniques, small-signal analysis, and frequency response to help learners develop strong analytical skills. Practical design methodologies, simulation approaches, and laboratory-oriented examples are incorporated to reinforce conceptual understanding.
In addition to core topics, the text highlights modern trends and applications including CMOS technology, VLSI concepts, power electronics, embedded systems, communication circuits, and sensor-based electronics. These emerging areas prepare readers to meet the demands of next-generation technologies and real-world engineering challenges. Numerical problems, design examples, and case studies are included throughout the book to encourage critical thinking and problem-solving abilities.
This book is carefully structured to serve multiple audiences. It can be adopted as a primary textbook for undergraduate and postgraduate courses in electronics and electrical engineering, while also acting as a reference guide for researchers, competitive exam aspirants, and practicing professionals. The content progression from basic concepts to advanced applications makes it equally suitable for self-study and classroom instruction.
The successful completion of this volume is the result of close collaboration among all contributing authors who shared a common goal—to produce an accessible, comprehensive, and industry-relevant text that supports effective learning and innovation. We sincerely hope that this book inspires curiosity, strengthens technical competence, and encourages readers to explore the fascinating world of electronic devices and circuits.
We extend our heartfelt gratitude to our colleagues, reviewers, students, and the publishing team for their continuous encouragement and support. Above all, we dedicate this work to learners and educators who strive to advance knowledge and contribute to technological progress.