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American telephone practice (1905)

Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 160

An illustration from American telephone practice, 1905, leaf 160
CAN TELEPHONE PRACTICE. ringer magnets, C, would at first be thought detrimental to thetalking efficiency, as it apparently affords a leak through which aportion of the voice currents may pass. The very high retardationof the ringer magnets, however, efifectually prevents this, and it isfound in… … FIG. 113.-CIRCUIT OF COMPLETE SERIES TELEPHONE—COIL INBASE OF ARM. m order to render clearer an understanding of the working of thecircuits. In Fig. 113 are shown the circuits of a complete serieslocal battery telephone set of the type shown in Figs. 107 and 108,the connections being arranged as in…

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