Modern electrical construction; a reliable, practical guide for the beginner in electrical construction, showing the latest approved methods of installing work of all kinds according to the safety rules of the National board of fire underwriters (1905)
Horstmann, Henry C[harles], 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] joint author · Chicago, F. J. Drake & Co. · leaf 27
alreadyseen, is traversed by electric currents exactly like those thatflow in the circuit of the transmitter. These currents passaround electro-magnets, g, and attract the diaphragm, /,more or less strongly in proportion to the varying degrees ofcurrent strength. In this manner the diaphragm, /, of… … Figure 8 ceiver can be used as such, and in fact was so used at first.Lines of short distances can be operated without transmit-ters, but the speech will not be as plain. INDUCTION COIL. 25 Figure 8 is a diagram of the connections of two telephoneinstruments together with the necessary call bells.…
Electrical engineering
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