A textbook that explains the amplifiers and circuits using diagrams that indicate current with polarity signs rather than arrows, so readers can choose to think about conventional or electron flow as they choose. After reviewing basic concepts of analog circuits and operational amplifiers, explains such topics as responses, elementary circuits, active filters, oscillators and timers, voltage regulators, and special-purpose amplifiers. Concludes with specialized circuits for communications, data conversion, and measurement and control. First published in 1994 by Macmillan. No bibliography. Annotation c. by Book News, Inc., Portland, Or.