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 166
eresrequired by the arc, the current will be maintained constantby the movement of the secondary coil. 1,424 HAWKINS ELECTRICITY The magnetic field produced by the primary must be keptthe same by a constant current from the alternator, therefore,when the lamp load is increased the primary voltage… … Fig. 1.982.—Mechanism of General Electric air cooled constant current transformer. Itoperates on the principle explained in the accompanying text and is built to supply 25 to100 arc lamps at 6.6 to 7.5 amperes. The transformers are interchangeable and willoperate on 60 or 125 cycles. The relative…
Electrical engineering
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