Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 201
ided is easily sufficient for the low voltage to which the fieldwinding is subjected. Excitation. The direct current for exciting the field magnetis carried in to the revolving-field structure by means of brushesrubbing on collector rings to which are connected the terminals ofthe field coils. The… … Fig. 172. Rotor Construction with Laminated Pole PiecesBolted to Cast-iron or Steel Ring handled, and lends itself readily to the operation of lights and smallauxiliary machines in power stations. For large alternators a voltage
Electrical engineering
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