Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 580
n furnished inlarge modern telephone plants. A full discussion of power machinery for telephone plants, thatis of the charging and ringing machines, would involve most ofthe points which have to be considered in the design and construc-tion of dynamo electrical machinery in general. There are,… … 55S POWER PLANTS FOR COMMON BATTERY SYSTEMS. 559 engineering, is that the current delivered by the charging generatorsor consumed by any motor deriving its current from the central bat-tery, must be as nearly as possible absolutely srnooth. Thefluctuations of electromotive force and current due to…
Telephone
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
