Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 339
e inthe circuit formed by the condenser and the primary winding of theinduction coil without passing through the retardation coil. Theconnections of the secondary winding of the operators inductioncoil and the operators head receiver are made in the usual man-ner. Bridged across the secondary side… … pose of allowing the operator to communicate with some other oper-ator, usually at a distant exchange, for purposes that will be pointed 318 AMERICAN TELEPHONE PRACTICE. out in subsequent chapters. The supervisory relays are shunted inall cases where they are placed in the talking circuit by a…
Telephone
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