BSTJ 1: 1. July 1922: Philadelphia-Pittsburgh Section of the New York-Chicago Cable. (Pilliod, James J.) (1922)
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en additional circuits are needed. Storagebatteries of smaller sizes supplying current at potentials of 30, 120and 130 volts are also provided. Examples of Circuit Arrangements Fig. 30 shows two possible methods of building up a Philadelphia-Pittsburgh terminal circuit and Fig. 31, a method of… … Fig. 29—Test and Repeater Station at Ligonicr, Pa. terminal circuits of the first type have been in everyday operationfor several months, but it is not the most economical arrangementthat it is possible to obtain for general use in providing this or similarservice. It will be noted that No. 19…
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