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 265
PIVOTFig. 2.4&9.—Magnetic vane form of electromagnetic or moving iron instrument. … FlG. 2,.t00.—Magnetic vane movement of a Wagner instrument; it is used both for voltmetersand ammeters. This type differs from the dynamometer movement in that a vane t:soft iron replaces the moving coil. The magnetic vane movement makes use of its con-trolling spring only for the purpose of…
Electrical engineering
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