This textbook for courses in electrical principles, circuit theory and electrical technology takes students from the fundamnetal of the subject up to and including first degree level. This new edition "has been updated with developments in key areas such as semiconductor diodes, transistors, batteries and fuel cells, along with brand new material on ABCD parameters and Fourier's Analysis. Greater emphasis is also placed on showing how the theory covered is applied in real-life engineering practice. In adition, the text has been restructured and exercises now appear at regualr intervals so that learning progress can be checked throughout." - back cover.