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 180
868 HAWKINS ELECTRICITY … I^IG. 1,015.—ResTiolds brush type flasher. The brush type, as its name indicates, is of brushconstruction and is limited to 5 amperes capacity on each switch. The cams constitut-ing a drum are of heavy construction while the brushes are of fine copper several leavesthick. It is most commonly used…
Electrical engineering
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