Title :
A Beam-Indexing Color Picture Tube-The Apple Tube
Author :
Barnett, G.F. ; Bingley, F.J. ; Parsons, S.L. ; Pratt, G.W. ; Sadowsky, M.
Author_Institution :
Res. Div. and Lansdale Tube Co., Philco Corp., Philadelphia, Pa.
Abstract :
This paper describes the Apple color picture tube, its dimensions, materials of construction, deflection and focus systems, and the geometry and deposition of the phosphor and secondary-emissive screen materials. The construction and operation of the electron gun, which produces two independent beams of very small cross section from a single cathode, are described in detail. Life test data and pilot production experience are discussed.
Keywords :
Building materials; Cathodes; Circuits; Electron beams; Electron tubes; Geometry; Phosphors; Signal resolution; Structural beams; Writing;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1956.275163
