This revised and expanded edition emphasizes the basic concepts underlying the analysis and design of all discrete and integrated circuits. Contains an extensive treatment of semiconductor fundamentals; new material on power supplies and Schottky barrier diodes including useful models for diodes in avalanche breakdown and cutoff; a more accurate linear model for the biopolar transistor; the concept of the Early voltage; and an improved account of frequency response. Features two new chapters devoted to the operational amplifier and its specifications and the use of the op-amp, with a number of its important applications such as voltage references, comparators, differentiators and intergrators. Many of the examples and all of the problems are new.