Download or read book Resistance Coils for Alternating Current Work (Classic Reprint) written by H. L. Curtis and published by Forgotten Books. This book was released on 2017-11-24 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Resistance Coils for Alternating Current Work In an ideal resistance coil for alternating-current work two requirements need to be fulfilled, (1) the resistance must be independent of the frequency and (2) the phase angle must be zero. The design of coils which will fulfill these conditions as nearly as possible presents several interesting problems and the solution in any given case will depend upon the magnitude of the resistance of the coil. In order that some of the difficulties may be appreciated, a theoretical discussion of the factors which must be considered in the design of such a coil will be given. This will be followed by a description of the designs which have been found satisfactory, together with some suggestions as to proper methods of connecting the coils when they are to be used in a resistance box. 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.