Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 333
r ringing circuit a COMMON BATTERY SUB-STATION EQUIPMENT. 311 bell wound to looo ohms and a two-mocrqfarad condenser. Thisarrangement gives thoroughly satisfactory results and has beenlargely adopted among the various Independent companies. It isfound, however, that almost equally satisfactory… … riG. 262.-COMMON BATTERY WALL SET-OPEN. Bell standard a decided falling off in efficiency is found; for instance,a 500-ohm bell with a one-microfarad condenser, while operative,does not give satisfactory ringing with the average central officegenerator. Many of the Independent companies are…
Telephone
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