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 247
Figs. 1,132 to 1,134.—Mercury arc rectifier outfit, or charging set. The cuts show front, rear,and side views of the rectifier, illustrating the arrangement on a panel, of the rectifiertube with its connection and operating devices. excitation. This condition of excitation can be kept up onlyas…
Electrical engineering
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