FR705523A - Improvements to vacuum tubes - Google Patents
Improvements to vacuum tubesInfo
- Publication number
- FR705523A FR705523A FR705523DA FR705523A FR 705523 A FR705523 A FR 705523A FR 705523D A FR705523D A FR 705523DA FR 705523 A FR705523 A FR 705523A
- Authority
- FR
- France
- Prior art keywords
- vacuum tubes
- tubes
- vacuum
- 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
- 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
- H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
-
- 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
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
-
- 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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US407652A US2109245A (en) | 1929-11-16 | 1929-11-16 | Vacuum tube |
Publications (1)
Publication Number | Publication Date |
---|---|
FR705523A true FR705523A (en) | 1931-06-09 |
Family
ID=23612963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR705523D Expired FR705523A (en) | 1929-11-16 | 1930-11-10 | Improvements to vacuum tubes |
Country Status (4)
Country | Link |
---|---|
US (1) | US2109245A (en) |
BE (1) | BE374539A (en) |
DE (1) | DE623082C (en) |
FR (1) | FR705523A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755195C (en) * | 1932-07-04 | 1951-11-08 | Marconi Wireless Telegraph Co | Cathode ray amplifier tubes |
DE878510C (en) * | 1932-07-16 | 1953-06-05 | Aeg | Electron beam tubes for sound film and television purposes |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2540621A (en) * | 1948-02-19 | 1951-02-06 | Rca Corp | Electron gun structure |
US2712975A (en) * | 1949-07-18 | 1955-07-12 | Meditron Company | Electronic diagnostic instruments |
US3383536A (en) * | 1964-09-22 | 1968-05-14 | Westinghouse Electric Corp | Cathode ray tube generating circular beam by lineal filament critically spaced from circular aperture |
-
0
- BE BE374539D patent/BE374539A/xx unknown
-
1929
- 1929-11-16 US US407652A patent/US2109245A/en not_active Expired - Lifetime
-
1930
- 1930-11-05 DE DE1930623082D patent/DE623082C/en not_active Expired
- 1930-11-10 FR FR705523D patent/FR705523A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755195C (en) * | 1932-07-04 | 1951-11-08 | Marconi Wireless Telegraph Co | Cathode ray amplifier tubes |
DE878510C (en) * | 1932-07-16 | 1953-06-05 | Aeg | Electron beam tubes for sound film and television purposes |
Also Published As
Publication number | Publication date |
---|---|
DE623082C (en) | 1935-12-12 |
BE374539A (en) | |
US2109245A (en) | 1938-02-22 |
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