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A Beam-Indexing Color Picture Tube-The Apple Tube

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5 Author(s)
Barnett, G.F. ; Res. Div. and Lansdale Tube Co., Philco Corp., Philadelphia, Pa. ; Bingleyt, F.J. ; Parsons, S.L. ; Pratt, G.W.
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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.

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Proceedings of the IRE  (Volume:44 ,  Issue: 9 )