GB503502A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB503502A GB503502A GB2707437A GB2707437A GB503502A GB 503502 A GB503502 A GB 503502A GB 2707437 A GB2707437 A GB 2707437A GB 2707437 A GB2707437 A GB 2707437A GB 503502 A GB503502 A GB 503502A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- electrode
- accelerator
- ray
- cathode
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
- H04N3/227—Centering
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Particle Accelerators (AREA)
Abstract
503,502. Cathode - ray oscillographs. GENERAL ELECTRIC CO., Ltd., JESTY, L. C., and SHARPE, J. Oct. 6, 1937, No. 27074. [Class 37] [Also in Group XXXV] In a cathode-ray tube in which at least one pair of deflecting plates 3, 3<SP>1</SP> is provided, these plates are adjustably biassed relatively to each other by connecting them through resistances 16, 18 across an adjustable potentiometer 12, 14 supplied from a source 9. The mean potential of the plates relatively to that of the accelerator 2 is kept constant by connecting this electrode to a tapping on a resistance 17 shunted across the supply to the deflecting. plates. Deflector plates 4, 4<SP>1</SP>, further from the accelerator 2 than the plates 3, 31, are also adjustably biassed through resistances 15, 19 and a potentiometer 11 although no means are provided for tying their mean potential to that of the electrode 2. If desired, however, such means may be provided. Undesirable effects due to beam current reaching the accelerator 2 and producing a P.D. in the resistance 17, are prevented by a screen electrode 7 of smaller aperture than the electrode 2 placed before it in the path of the ray and connected to + H.T. Specifications 466,770, 469,394, [both in Group XXXV], 478,200; and 500,809, [Group XL], are referred to. Reference has been directed by the Comptroller to Specification 479,003.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2707437A GB503502A (en) | 1937-10-06 | 1937-10-06 | Improvements in or relating to cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2707437A GB503502A (en) | 1937-10-06 | 1937-10-06 | Improvements in or relating to cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB503502A true GB503502A (en) | 1939-04-06 |
Family
ID=10253731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2707437A Expired GB503502A (en) | 1937-10-06 | 1937-10-06 | Improvements in or relating to cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB503502A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487550A (en) * | 1944-10-28 | 1949-11-08 | Rca Corp | Centering means for cathode-ray deflecting circuits |
-
1937
- 1937-10-06 GB GB2707437A patent/GB503502A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487550A (en) * | 1944-10-28 | 1949-11-08 | Rca Corp | Centering means for cathode-ray deflecting circuits |
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