An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 589
TransmitterFig. 376. Eeceiver Induction coil in local battery-telephone set. … TubeInsulatingMaterialTerminals o_f_PrimaryWinding Primary Winding Fig. 377. — Perspective view and cross section of telephone induction coil. direct current of low voltage into alternating currents of highervoltage so that the line loss may be less. The induction coil alsohas the advantage of…
Electricity · Magnetism
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