Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 671
trunk-line plug before the subscriberhas finished. One small storagebattery is sufficient for a largeexchange; and the entire plant,— boards, subscribers instru-ments, and all, —is much lessexpensive than those of the or-dinary multiple type. The diagrams (Figs. 22c?, 22e)show the scheme of… … COMMOH-KATTEIIY system:. The common-battery system, as its name implies, is a centralized energysystem ; i.e., the transmitter and signalling batteries, or sources of energy,are all located at the central office or exchange. This centralization hasnumerous advantages: batteries at each station are…
Electrical engineering
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