. Electrical world. FIG. 35.—ERICSSON COMBINED TRANSMITTER AND RECEIVER. diameter and .012 in. thick. The front electrode consists of a pieceof brass in which a number of corrugations are punched, as is shownin Figs. 37 and 38. This front electrode may or may not be gold-plated, and is secured to the front of the diaphragm by means of a FIG. 37.—ERICSSON P.\RTS. and then around this electrode a felt ring 5/16 in. thick and zA diameter is placed. In the center of the electrode a little bit offelt is placed, as shown in Fig. 36. The interior of the felt ringis filled with 12 g
. Electrical world. FIG. 35.—ERICSSON COMBINED TRANSMITTER AND RECEIVER. diameter and .012 in. thick. The front electrode consists of a pieceof brass in which a number of corrugations are punched, as is shownin Figs. 37 and 38. This front electrode may or may not be gold-plated, and is secured to the front of the diaphragm by means of a FIG. 37.—ERICSSON P.\RTS. and then around this electrode a felt ring 5/16 in. thick and zA diameter is placed. In the center of the electrode a little bit offelt is placed, as shown in Fig. 36. The interior of the felt ringis filled with 12 grains of coarse granular carbon. The carbon ELECTRICAL WORLD and ENGINEER. Vol. XLIII, No. 3- e, is ./.6 in. ... and contains circular g^ve. ^^l^^^^^ -;^^^^t:^J^ ^::r^r!i::^ diaphragm is protected by means of two heavy layers of oil silk carbon block /s m. muand is cushioned by two rings of blotting FIG. 38.—ERICSSON DISSECTED. TJie Manhattan Transmitter.—The transmitter manufactured bythe Manhattan Telephone Company is shown at D, Fig. 21. InFig. 39 the rear cover is removed and in Fig. 40 the instrument isdissected. There is a light brass face plate fashioned in the usualmanner, which contains a rough aluminum diaphragm 2^ in. in FIG. 40. —M.\\N TR.\NSMITTER DISSECTED. ^1
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
