s the transmitter, T, and loval battery, E, from the apparent from the first, and that was its continual tendency Fig. 8 shows a form of electrophorus telephone which coil, A, and in this position leaves the polarized relay, P R, | to give the operator what is termed the back stroke, which acts by… … for transmitting and receiving, but the results are necessari- TELEPHONE SIGNALING APPARATUS. ly very weak. “For lines of moderate lengths, say from one to thirty miles, another arrangement, shown in Fig. 4, may be Ae | Another form of electro-static telephone is shown in Fig. While engaged in…
Internet Archive · Public domain (published before 1931). Free to use for anything.
