. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. DESIGN FACTORS OF THE 1553 TRIODE 503 that has been previously gold sputtered. The winding tension is held within ±1 gram weight to about 15 gram weight, which is about sixty per cent of the breaking strength of the wire. This is accomplished by means of a small drag-cup motor brake, a new method which was developed especially for these fine grids. The grid is then heated in hydrogen to about 1100°C, at which point the gold melts and brazes the wires to the frame. The
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. DESIGN FACTORS OF THE 1553 TRIODE 503 that has been previously gold sputtered. The winding tension is held within ±1 gram weight to about 15 gram weight, which is about sixty per cent of the breaking strength of the wire. This is accomplished by means of a small drag-cup motor brake, a new method which was developed especially for these fine grids. The grid is then heated in hydrogen to about 1100°C, at which point the gold melts and brazes the wires to the frame. The mean deviation in wire spacing is less than about ten per. Fig. 4.—Physical appearance of the elements comprising the 1553 triode. cent, and in fact these grids are fine enough and regular enough to be diffraction gratings as is shown in Fig. 5. In this figure, a fourth order spectrum diffracted by one of these grids can be seen. The third order, which should be absent because the wire size is about one-third of the pitch, is much less intense than the fourth. Proper spacing of the grid is then obtained by a thin copper shim placed between the cathode ceramic and the grid frame. Its thickness must be equal to the coating thickness, plus the thermal motion of the cathode, plus the desired hot Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Telephone and Telegraph Company. [Short Hills, N. J. , etc. , American Telephone and Telegraph Co. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
