Simplified Design of Filter Circuits, Paperback by Lenk, John D., ISBN 0750696559, ISBN-13 9780750696555, Brand New, Free shipping in the US A step-by-step guide to designing filters using off-the-shelf ICs. Starts with basic operating principles of filters and common applications, then moves on to describe how to design circuits by using and modifying chips available on the market. A final chapter provides 47 simplified design examples. Emphasis is on practical, simplified approaches to solving design problems. Highly illustrated with manufacturers’ design sheets. Annotation c. by Book News, Inc., Portland, Or.