Electronics 3 provides students with a solid grounding of the basics of electronics and covers the complete requirements of the BTEC Electronics NIII unit. This thoroughly revised fifth edition contains up-to-date material as well as many examples and exercises with worked answers to encourage practical application of the theory presented. The book is a core text for all students taking BTEC NIII Electronics unit for courses in electrical, electronic, communication and computer engineering. It is also suitable for advanced CGLI courses in electronics and related studies such as electical installations, as well as the electronic components of mechanical engineering courses.