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 274
table for connecting acrossthe circuit. 1XDICATIXG DEVICES 1.793 few number of turns or often of only one turn of wire. The movablecoil is suspended by a thread and a spiral spring attached to atortive head which passes through the center of a dial. Theends of the movable coil dip into mercury… … Fig. 2.514.—Wagner dynamometer movement. In this type of instrument the deflection isproportional to the square of the current, producing a constantly decreasing sensitivenessas the pressure applied is decreased. The dynamometer movement is, for any indication,more accurate than the magnetic vane,…
Electrical engineering
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