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 593
Fig. 381. — Connections for Bell deskset to be used with, common battery. 528 ELECTRICITY AND MAGNETISM … Figure 382 shows the familiar desk set of telephone instruments.The portable part is the transmitter t and the receiver R hungon a hook switch. The fixed part of the set consists of a boxmounted on the wall, and in this box is the ringer r, the induc-tion coil, the condenser, and often a…
Electricity · Magnetism
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