GB521199A - Improvements in and relating to the production and control of electron streams - Google Patents
Improvements in and relating to the production and control of electron streamsInfo
- Publication number
- GB521199A GB521199A GB32464/38A GB3246438A GB521199A GB 521199 A GB521199 A GB 521199A GB 32464/38 A GB32464/38 A GB 32464/38A GB 3246438 A GB3246438 A GB 3246438A GB 521199 A GB521199 A GB 521199A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- wires
- cathode
- anodes
- grid
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
- H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting
Landscapes
- X-Ray Techniques (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
521,199. Cathode-ray tubes. HARRIES, J. H. O. Nov. 9, 1938, Nos. 32464 and 34983. [Class 39 (i)] In a beam valve such as a heavy current relay or frequency multiplier the beam is maintained by a lens system comprising an electron permeable electrode E, a deflecting electrode D at a lower steady potential than the electrode E and an accelerator electrode G2 near the cathode A. The cathode is surrounded by a shield B at near zero bias and between the grid G2 and the cathode is a negatively biassed grid G1, the wires of the grids G1, G2 being placed very close to deflect the electrons from the accelerating grid G2. The cylindrical deflecting electrode D surrounds the beam along part of its path. The permeable electrode consists of spaced rings e with segments e<SP>2</SP> carrying inwardly projecting divided wires e<SP>3</SP>. Beyond this electrode is an anti-cross-field grid F ; it consists of an annulus f<SP>1</SP> carrying wires f<SP>2</SP> and partition plates f<SP>3</SP> providing three recesses, a central one for the main carbon output anode T and side recesses for the sub-anodes T1. The electrode F is at substantially lower bias than the electrode E (1) to screen the output anode from changes in voltage of the electrodes E, Dn and (ii) to prevent cross flow of secondary electrons between the main to the sub-anodes T, T1. The main anode is at the same potential as the electrode E and the anodes at a potential between this and the potential of the electrode F. The cathode, shield B, grids G1, G2, and electrode E are supported by wires passing through the pinch H ; the wires d<SP>1</SP> to the deflecting plates pass through a side tube X ; the main anode is supported by a tungsten rod s and the sub-anodes and the electrode F by wires arranged radially to pass out through the side wall of the tube. The support rods care welded direct to the annulus f<SP>1</SP> but the rods d are welded to wires on the annulus to allow movement. According to the second Provisional Specification the electrode D may be divided into more than two sections to receive various deflection impulses ; the electrode E may have slats or perforated plates in place of the wires. The tube may work as a selfoscillator. Specifications 380,429 and 521,246 also are referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB32464/38A GB521199A (en) | 1938-11-09 | 1938-11-09 | Improvements in and relating to the production and control of electron streams |
| US302470A US2288239A (en) | 1938-11-09 | 1939-11-02 | Electron lens and deflecting system |
| FR861473D FR861473A (en) | 1938-11-09 | 1939-11-08 | Improvements in the production and control of electron currents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB32464/38A GB521199A (en) | 1938-11-09 | 1938-11-09 | Improvements in and relating to the production and control of electron streams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521199A true GB521199A (en) | 1940-05-15 |
Family
ID=10338994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32464/38A Expired GB521199A (en) | 1938-11-09 | 1938-11-09 | Improvements in and relating to the production and control of electron streams |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2288239A (en) |
| FR (1) | FR861473A (en) |
| GB (1) | GB521199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431767A (en) * | 1943-08-14 | 1947-12-02 | Eitel Mccullough Inc | Electrode mounting in electron discharge tube |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE475602A (en) * | 1946-08-23 | |||
| NL93754C (en) * | 1950-06-07 | 1960-03-15 | ||
| US2776388A (en) * | 1953-05-11 | 1957-01-01 | Zenith Radio Corp | Electron-discharge device |
-
1938
- 1938-11-09 GB GB32464/38A patent/GB521199A/en not_active Expired
-
1939
- 1939-11-02 US US302470A patent/US2288239A/en not_active Expired - Lifetime
- 1939-11-08 FR FR861473D patent/FR861473A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431767A (en) * | 1943-08-14 | 1947-12-02 | Eitel Mccullough Inc | Electrode mounting in electron discharge tube |
Also Published As
| Publication number | Publication date |
|---|---|
| US2288239A (en) | 1942-06-30 |
| FR861473A (en) | 1941-02-10 |
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