Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 335
t ranges from 6 to 10 amperes according to the amount of light required, the values usually employed being 9.6 amperes and 47 volts. The use of a greater voltage reduces the number of arc that can beplaced in one series, increases carbon consumption, and produces flam-ing. The use of a lesser… … *0$M$mmM:^ V^^\-v Fig. 3,336.—General appearance of an electric arc between two carbon electrodes when main-tained by direct current passing from the upper carbon to the lower carbon, indicated bythe arrow and signs. Most of the light issues form the tip of the positive carbon, and this-portion is…
Electrical engineering
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