Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 759
controllingthe amount of current flowing therein. The lever is placed hori-zontally and moves over contact segments disposed in a circle.These segments are insulated from each other, but are connectedby coils of iron wires of different resistances. When the lever isin the position shown in the… … Fig, 480. fields electric railway. 739 ance is 2 olims, and so on, the amount of resistance included in cir-cuit when the lever touches each segment being in fig. 481 indica-ted by the figures thereon. The rheostat included two Edison Blamps of 85 ohms each, so that the total resistance when…
Electrical engineering
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