Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 759
nnecting the instrument atstation I. with the line belonging to station IV. When the genera-tor at station IV. is operated, the current flows from binding post, b,to the common-return wire to the binding post, b, at station IV.,thence through the generator and call-bell at that station to… … FIG. 522.—CIRCUITS OF ORDINARY HOUSE SYSTEM. into the circuit over which the calling current was just sent, and theparties converse over the common-return wire and line wire No. 4.Had station IV. called station 1., then the talking and ringingwould have been done over the common-return wire and…
Telephone
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