. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. THE CA THODE RA Y OSCILLOGRAPH 13 film; and third, tubes with a hot cathode, with a relatively low oper- ating voltage. Of this last type is the Western Electric No. 224 Cathode Ray Oscil- lograph. Since this is the tube with which I have had more direct. Fig. 18—Norinder, 1930—group of oscillographs.'* contact I wish to discuss some problems of its development and op- eration. The design of the tube shown in Fig. 19 is now fairly familiar,* and i« Norinder, H., Zeits.
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. THE CA THODE RA Y OSCILLOGRAPH 13 film; and third, tubes with a hot cathode, with a relatively low oper- ating voltage. Of this last type is the Western Electric No. 224 Cathode Ray Oscil- lograph. Since this is the tube with which I have had more direct. Fig. 18—Norinder, 1930—group of oscillographs.'* contact I wish to discuss some problems of its development and op- eration. The design of the tube shown in Fig. 19 is now fairly familiar,* and i« Norinder, H., Zeits. f. Phys., 63, p. 672, 1930. * Since the paper was read the tube has been altered in certain respects. The glass enclosure for the filament has been replaced by one of metal, and the anode and deflector plates are supported on machined insulating blocks. These changes make the structure more rugged and insure more nearly perfect alignrnent of the parts. The end of the bulb has been changed so as to present a cylindrical surface instead of a spherical one, thus permitting more intimate contact between the flu- orescent screen and a photographic film when contact photographs are 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
