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[Electric engineering.] (1902)

International Library of Technology · Scranton, International Textbook Co. · leaf 111

An illustration from [Electric engineering.], 1902, leaf 111
ld not have more than 15 or 16 volts difference ofpotential between bars, and it is better to make it less. Ifwe provide 7 or 8 bars for each 100 volts that the machinegives, multiplied by the number of pole-pieces, this will givea safe working rule. Thus, a 500-volt four-pole dynamo will 2486… … potential between each of 14.28 volts. For a ring-woundarc-light dynamo, the number of bars should be four or fivefor each lamp. DYNAMO-ELECTRIC MACHINE DESIGN. 2487 3724. In deciding upon the clearance between arma-ture and commutator, enough space must be left for fasten-ing the armature leads,…

Electrical engineering

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