The standard manual of dynamos and practical application of dynamo-electric machinery (1915)
MacFadden, Carl K. [from old catalog], Ray, William D., [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 64
nt of current at about 500 volts pressure. The pos-itive brush is connected to the trolley line L and thenegative brush should be connected to the rail or to thecopper wires laid in the ground near the track, whichserve as the return circuit for the current. Thus the neg-ative side is always… … Q Q]St i_A^, ajfi^j, . ,[i^^ =5^ f^eruiy C l^IGURK 24 —STREET RAII^WAY TROI,I,EY SYSTEM. depended on to furnish a path of low enough resistanceto insure satisfactory results and a system of * bonding *is always resorted to. Thebonding consists of unitingthe ends of the rails together by means of…
Electrical engineering · Electric machinery
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