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), 1833-1928 · New York : T. Audel & Co. · leaf 156
When, due to increased speed of dynamo,the voltage tends to exceed the value for which the regulator is set, the regulating contactopen, opening the direct shunt field circuit and cutting in the regulating resistance. Thiscauses a momentary drop in voltage so that the contacts close again. This… … SHUNTFIELDCOIL t LAMPS —O— o STORAGE BATTERY huh— IRON BALLAST COIL
Electrical engineering
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