ECA TEP 192-1984 Glossary of Cathode-Ray Tube Terms and Definitions《阴极射线管的术语和定义词汇》.pdf
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1、S E PTEMBER 1984 THE GLOSSARY CATHODE-RAY TUBE TERMS AND DEFINiTiONS FORMULATED BY EIA TUBE ENGINEERING PANEL ADVISORY COUNCIL EIA PUBLICATION NO. 102 EIA TEP192 84 m 3234600 0008534 O m . NOTICE EIA Engineering Standards and Publications are designed to serve the public interest through eliminating
2、 .misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Pub- lications shall not in any
3、 respect preclude any member or non-member of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether the standard is to be used eith
4、er domestically or internationally. Recommended Standards and Publications are adopted by EIA without regard to whether or not their adoption may involve patents on articles, materials? or processes. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obliga
5、tion whatever to parties adopting the Recom- mended Standard or Publication. Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Departnent 2001 Eye Street, N.W. Washington, D.C. 20006 PRICE: $11.00 Published in U.S.A. r- 4 EIA TEP192 84 m 3234600 0008535 2 W PREFACE This glossary of terms an
6、d definitions was prepared by the EIA Tube Engineering Panel Advisory Council (TEPAC) JT-20 Committee on Electro-tic Devices. its preparation, use was made of input and suggestions received from many individuals and organizations. It is intended to be timely and comprehensive. It is hoped and expect
7、ed that it will prove to be useful to those who build cathode ray tubes, to those who use them, and to all others who are interested in CRT technology. TEP-192 supercedes and replaces TEP-92 titled -Yathode-Ray .Tubes - Glossary of Terms and Definitions (published January, 1975). Those who have sugg
8、estions related to possible future editions of TEP-192 may address them to the Electronic Industries Association, Engineering Department, 2001 Eye Street, N.W., Washington, D.C. 20006. In - i. ri .- EIA TEP192 84 3234600 0008536 4 M .l TEP - 19 2 Page 1 LOSSARY OF CATHODE-RAY TUBE ,TERMS AND DEFINIT
9、IONS Aberration Accelerator Active Line . Adhered Glass Aging, Cathode Aging ,Phosphor -Aging, Screen Air Line Q Distortion of the electron beam due to electron lens defects, such. as astigmatism, coma and electron velocity distribution. An electrode used to increase the velocity of electrons. The p
10、ortion of the scanning iiie which can be used specifically to di spl ay i nf omat ion. See 61 ass, Adhered. Stabilization of the em.l$sion current of the cathode by operation for a period of time. Loss of luminous efficiency as a function of total accumulated electron charge per unit area. Sometimes
11、 .referred as Coulomb Aging. (See also Aging, Screen). . Reduction in screen luminance or radiance resulting from either phosphor aging, electron or X-ray browning of the f acepl ate gl ass, or a combination of all factors caused by electron bombardment. The individual effects noted cannot be separa
12、tely detected in a normal CRT. An elongated blister in glass tubing or cane. (See Aging, Phosphor) Alignment, Electrodes The positioning of all electrodes in the gun assembly so that: a) The geometric (2) axis of the field shaping portions of all electrodes are coincident. b) The field shap-ing plan
13、es of all electrodes are truly perpendicular to the geometric (2) axis. Alignment, Mesh A space-charge controlled tube in which the wires of two or more sieve type grids are substantially oriented so that they are either -in the electron shadow of each other, or so disposed relative to each other as
14、 to eliminate unwanted moire patterns. Alignment, Mount .The relative positioning of the mount inside the neck tubing so that the geometric (z) axes of the two are coincident. Alignment, Neck Centering and perpendicularity of the axis of the neck tubing relative to the CRT faceplate. Aluniniration T
15、he process of depositing a thin aluminum film on the inside surface of the screen and/or funnel portion of a CRT. is for the purpose of electron-collection and conduction as well as light reflection. The screen aluminization ,Angle, Bean Annealing, Glass The angle of the cone-shaped bundle .of elect
16、rons emerging from the crossover point also known as the alpha angle. To modify the stresses in glassware by the use of appropriate heat i ng and cool ing processes. e EIA TEP192 84 m 3234b00 0008537 b m - .:- TEP-192 Page 2 GLOSSARY OF CATHODE-RAY TUBE TERMS AND DEFINITIONS Anode Anode Contact Posi
17、tive elements relative to the cathode in an electron device. Usually refers to the element with the highest positive voltage. A feedthrough usually in the form of a metallic button or wire that provides electrical contact through the envelope to the anode. Anode Current Total current collected by th
18、e anode. Aperture, Grid A hole in a mount element which allows the electron beam to pass through. Usually used for either lensing or beam trimming. Aperture,Limiting A small aperture used for reducing or limiting the electron beam diameter or for modifying its shape. Aquadag A coloidal suspension of
19、 graphite (sometimes in combination with other conductive materials) used to paintconductive layers on CRT components The result of electrical breakdown between two elements having an excessive potenti al difference between them. . Arcing Astigmatism Bake, Exhaust A focus effect in which electrons,
20、in different axial planes, focus at different axial distances. Heating of the tube while it is attached Lo a vacum system during processing to remove occluded gases. Bake, Screen Barrel DistortSon The process of removing the lacquer film and some of the occluded gases in the tube envelope by heating
21、, after aluminitation. See Di stort ion, Barrel Base That part of an electronic tube which is attached to or is a part of the envelope, and carries the majority of pins and contacts used to connect the electrodes to the external ,. circuit. 1, A glass rod used to support gun elements in the correct
22、relation to each other. 2. A small glass mass used to support and/or insulate parts and wires in a tube, Bead Beam Angle See Angle, Beam, Beam Current Bem Penetration CRT The electron current in a beam of a CRT at any stated cross-section. color and/or persistence can be altered by modulation of the
23、 screen voltage. attenuating layer between them (layer type) or as a single deposit of coated granules using several phosphors and attenuating 1 ayers between them (onionskin type). A potential applied to the cathode relative to 61 to control the flow of electrons through the gun, A tube with multip
24、le phosphors in close association whose The phosphors may be deposited separately with an electron Bias, Cathode EIA TEP192 84 = 3234600 0008538 8 L TEP- 192 Page 3 GLOSSARY OF CAB TU MS AND OEFINXTIONS Bias, Fixed A potential between cathode and GI which is maintained constant for a particular tube
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