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 217
shown in fig. 198. This CLASSES OF DYNAMO 197 method of field excitation is seldom used except for alternators;it is, however, to be found occasionally in street railway powerhouses, the shunt fields of all the dynamos being separatelyexcited by one dynamo. In common with the magneto, the… … Fig. 199.—Diagram showing principle of Dobrowolski three wire dynamo. This type ofmachine is shown in more detail in fig. 795 on page 708. Dobrowolski Three Wire Dynamo.—This type of dynamowas designed to operate a three wire system of distributionwithout a balancer. The armature is provided with…
Electrical engineering
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