The Dynamo, Vol. 1 of 2

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Excerpt from The Dynamo, Vol. 1 of 2: Its Theory, Design, and ManufactureOn the continuous-current side the carbon collecting brush still holds the field, but much work, both experimental and theoretical, has been done towards the elucidation of its action. The treatment of commutation and of the sparking limitations of the dynamo has therefore been recast and expanded in the light of later researches, especially those of Prof. E. Arnold, to whom the acknowledgments of all students of this difficult problem are due. Within recent times the continued endeavour to reduce the necessary size and therefore cost of dynamos has led to a remarkable revival of the use of auxiliary commutating poles, with results that have amply justified their re-intro duction. Their theory has therefore here been considered more fully and at such length as space permitted. The mechanical construction of the commutator, both of the V-type and with shrink-rings, has also been treated in greater detail in view of the higher speeds which now obtain.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.