Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 369
may both be mounted on thesame armature shaft, when the machine will give either adirect or alternating current, or both, at the same time to two ^ 350 PRACTICAL ELECTRICITY, independent circuits. The dynamo would then be called adouble current generator. The collector rings would be con-nected one… … Fig. 329. -Multi-Coil Siemens Drum Armature.Tooth-core pattern. wound upon a cylindrical laminated iron core made by as-sembling, upon the armature shaft, thin sheets of soft iron ;after being properly insulated the coils are wound upon thecore, and connected in series and to the commutator in the…
Electricity · Magnetism
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