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- · New York, T. Audel · leaf 184
helength of time the film is in the electrolyte, and upon its tem-perature. It is therefore necessary to charge the cells from timeto time and thus prevent the dissolution and consequent rushof current which would otherwise occur when the arresterdischarges. Ques. Describe the charging operation… … PORCELAIN &AP VACUUM DIAPHRAGM PUNCHING -SPECIAL BUSHING Fig. 2,396.—Sectional view of General Electric vacuum tube arrester for railway signal cir-cuits. The arrester is essentially a gap in a vacuum. In construction, the gap is formedbetween the inner wall of a drawn metal shell and a disc…
Electrical engineering
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