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Scientific American, Vol. 62, No. 8 (February 1890) (1890)
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und upon a to two insulated rings, whence the current is taken is always in tlie same direction, though it may vary in pedestal. Sometimes this exciting dynamoi is con- by brushes. The armature core is perforated and lami- Intensity so as to strongly pulsate. nected directly to the main armature… … Fig. 8.-WE8TINOE0TrSE DTVAHO AND EXCITEB-l 500 CANDLE FOWEB. THE ALTEBNATIira CITBBEKT STSTEM OP ELECTBIC LIOHimO. © 1890 SCIENTIFIC AMERICAN, INC.Patents · Current · Zinc · Scientific American · Solution · Steam engine · Patent office · Post office · Hydrochloric acid · Water gas · Electric lighting · Saturated solution · Sulphuric acid · Electromotive force
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