The Telephone

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Excerpt from The Telephone: Outlines of the Development of Transmitters and Receivers This little book is offered without apology. Its issue has been prompted by the fact that in no book which has come to my notice, on the same subject, is there a clear and connected explanation of the principles underlying the action and the design of telephone transmitters and receivers. I have avoided making a descriptive catalogue of instruments, and have endeavored to set forth the facts and principles in such a way that they will be easily and thoroughly understood. For this reason, those instruments only have been described which have demonstrated their importance by long service, or which seem to mark steps in the development of modern transmitters and receivers. A thorough grasp of these principles will make it easy to apply them to individual instruments. Although written primarily for men engaged in practical telephone work, it was my intention that the book should serve also as the basis for a lecture course to students. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.