FR2423856A1 - Moyen de chauffage rapide pour cathodes - Google Patents
Moyen de chauffage rapide pour cathodesInfo
- Publication number
- FR2423856A1 FR2423856A1 FR7909545A FR7909545A FR2423856A1 FR 2423856 A1 FR2423856 A1 FR 2423856A1 FR 7909545 A FR7909545 A FR 7909545A FR 7909545 A FR7909545 A FR 7909545A FR 2423856 A1 FR2423856 A1 FR 2423856A1
- Authority
- FR
- France
- Prior art keywords
- metallised
- layer
- discharge device
- heater assembly
- electron discharge
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/24—Insulating layer or body located between heater and emissive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
Le moyen selon l'invention est notamment prévu pour le chauffage rapide des cathodes dans les tubes cathodiques. Il comprend un substrat plat 12 constitué par un cristal hexagonal d' alpha -alumine, une première métallisation 18 disposée sensiblement au centre d'une des faces du substrat pour servir de support au matériau émetteur d'électrons, et une seconde métallisation 26 disposée sur l'autre face du substrat en regard de la première métallisation, et en forme de serpentin, pour assurer le chauffage requis. Application : récepteurs de télévision.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/896,644 US4151440A (en) | 1978-04-17 | 1978-04-17 | Cathode heater assembly for electron discharge device |
US05/896,641 US4150318A (en) | 1978-04-17 | 1978-04-17 | Low mass, indirectly heated, fast warm-up heater-cathode assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2423856A1 true FR2423856A1 (fr) | 1979-11-16 |
FR2423856B1 FR2423856B1 (fr) | 1984-06-22 |
Family
ID=27129148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7909545A Granted FR2423856A1 (fr) | 1978-04-17 | 1979-04-13 | Moyen de chauffage rapide pour cathodes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2423856A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1303636A (fr) * | 1961-08-04 | 1962-09-14 | Electronique & Physique | Perfectionnements apportés aux systèmes électriques radiants notamment aux cathodes planes ou similaires |
GB1033448A (en) * | 1964-05-05 | 1966-06-22 | Philips Electronic Associated | Improvements in the manufacture of indirectly-heated cathodes |
US3947715A (en) * | 1975-06-10 | 1976-03-30 | Gte Sylvania Incorporated | Fast warm up cathode for a cathode ray tube |
FR2314579A1 (fr) * | 1975-06-11 | 1977-01-07 | Sony Corp | Cathode thermoionique et notamment cathode plate |
-
1979
- 1979-04-13 FR FR7909545A patent/FR2423856A1/fr active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1303636A (fr) * | 1961-08-04 | 1962-09-14 | Electronique & Physique | Perfectionnements apportés aux systèmes électriques radiants notamment aux cathodes planes ou similaires |
GB1033448A (en) * | 1964-05-05 | 1966-06-22 | Philips Electronic Associated | Improvements in the manufacture of indirectly-heated cathodes |
US3947715A (en) * | 1975-06-10 | 1976-03-30 | Gte Sylvania Incorporated | Fast warm up cathode for a cathode ray tube |
FR2314579A1 (fr) * | 1975-06-11 | 1977-01-07 | Sony Corp | Cathode thermoionique et notamment cathode plate |
Also Published As
Publication number | Publication date |
---|---|
FR2423856B1 (fr) | 1984-06-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
TP | Transmission of property | ||
ST | Notification of lapse |