Kirkman, Marshall Monroe, 1842-1921 · New York, Chicago, The World Railway Publishing Company · leaf 434
ay be distributed, either by constant potential or by constant current. In the constant potential method, the pressure is kept constant, and the demands for different amounts of power, either by Armature complete. The the variation of the number coils are held firmly in the of lamps or motors, or… … Armature Disc, showing slots, diagram of commu- through all the devices when tator and one coil in place operated on this system. The connected to the commu- tator. constant current series system finds its common application in arc lighting, where the current is maintained constant and the pressure…
Railroads · Transportation
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