GB528979A - Improvements in or relating to electron discharge tubes - Google Patents
Improvements in or relating to electron discharge tubesInfo
- Publication number
- GB528979A GB528979A GB1465439A GB1465439A GB528979A GB 528979 A GB528979 A GB 528979A GB 1465439 A GB1465439 A GB 1465439A GB 1465439 A GB1465439 A GB 1465439A GB 528979 A GB528979 A GB 528979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- disc
- aperture
- cup
- secured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/36—Tubes with flat electrodes, e.g. disc electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
528,979. Cathode-ray tubes. PYE, Ltd., and LIEBMANN, G. May, 16, 1939, No. 14654. [Class 39 (i)] The control electrode of a cathode-ray tube comprises a plate one surface of which is flush with the emission surface of the cathode and formed with an aperture larger than the electrode aperture, over which is secured a thin plate 7 with an aperture of the requisite size. The cathode 1 may be secured in an aperture in a ceramic disc 4 by means of a strap 6 of metal of low heat conduction, and the plate forming the control electrode may be the bottom of a cup-shaped member 8 to which is secured the thin disc 12 ; the thickness of the cup 8 may be 0.3 mm. and of the disc 12, 0.1 mm. The cathode 1 is formed of a nickel tube with an internal heater, and to prevent vaporized nickel from depositing in the ceramic disc 4, shields 23 are provided. To reduce conduction between the cathode 1 and disc 4 the aperture in the disc may be square, so that there is only line contact between it and the cathode. The cup 8 may be closed by a disc 17. Specification 503,074 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1465439A GB528979A (en) | 1939-05-16 | 1939-05-16 | Improvements in or relating to electron discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1465439A GB528979A (en) | 1939-05-16 | 1939-05-16 | Improvements in or relating to electron discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB528979A true GB528979A (en) | 1940-11-12 |
Family
ID=10045143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1465439A Expired GB528979A (en) | 1939-05-16 | 1939-05-16 | Improvements in or relating to electron discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB528979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE961642C (en) * | 1951-10-17 | 1957-04-11 | Electric & Musical Ind Ltd Hay | Electrode structure for electrical discharge tubes, especially for the beam generation system of a cathode ray tube |
-
1939
- 1939-05-16 GB GB1465439A patent/GB528979A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE961642C (en) * | 1951-10-17 | 1957-04-11 | Electric & Musical Ind Ltd Hay | Electrode structure for electrical discharge tubes, especially for the beam generation system of a cathode ray tube |
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