GB453154A - Improvements in or relating to indirectly heated cathodes for thermionic valves - Google Patents
Improvements in or relating to indirectly heated cathodes for thermionic valvesInfo
- Publication number
- GB453154A GB453154A GB7041/35A GB704135A GB453154A GB 453154 A GB453154 A GB 453154A GB 7041/35 A GB7041/35 A GB 7041/35A GB 704135 A GB704135 A GB 704135A GB 453154 A GB453154 A GB 453154A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indirectly heated
- relating
- wires
- thermionic valves
- heated cathodes
- 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
- 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
- H01J1/22—Heaters
Landscapes
- Solid Thermionic Cathode (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
453,154. Thermionic cathodes. STANDARD TELEPHONES & CABLES, Ltd., and GOODCHILD, F. D., 63, Aldwych, London. March 6, 1935, No. 7041. [Class 39 (i)] The heater for an indirectly heated cathode is formed by insulating lengths of wire with say aluminium oxide and then placing two or more wires c, d, parallel to each other and coating them again so that the finished heater is formed of parallel wires encased in insulation. The wires may be bent and inserted as a block into the cathode body. Dimensions of one example are given. They are connected together to make a continuous heating circuit.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL42560D NL42560C (en) | 1935-03-06 | ||
BE411406D BE411406A (en) | 1935-03-06 | ||
GB7041/35A GB453154A (en) | 1935-03-06 | 1935-03-06 | Improvements in or relating to indirectly heated cathodes for thermionic valves |
US45701A US2164913A (en) | 1935-03-06 | 1935-10-19 | Indirectly heated cathode |
FR798600D FR798600A (en) | 1935-03-06 | 1935-10-31 | Improvements to indirectly heated cathodes for thermal valves or the like |
DEI54281D DE755099C (en) | 1935-03-06 | 1936-02-08 | Indirectly heated glow cathode designed as a flat cathode for electron tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7041/35A GB453154A (en) | 1935-03-06 | 1935-03-06 | Improvements in or relating to indirectly heated cathodes for thermionic valves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB453154A true GB453154A (en) | 1936-09-07 |
Family
ID=9825498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7041/35A Expired GB453154A (en) | 1935-03-06 | 1935-03-06 | Improvements in or relating to indirectly heated cathodes for thermionic valves |
Country Status (6)
Country | Link |
---|---|
US (1) | US2164913A (en) |
BE (1) | BE411406A (en) |
DE (1) | DE755099C (en) |
FR (1) | FR798600A (en) |
GB (1) | GB453154A (en) |
NL (1) | NL42560C (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2487695A (en) * | 1946-11-29 | 1949-11-08 | North American Geophysical Com | Electric heating element |
US2742585A (en) * | 1952-08-22 | 1956-04-17 | Gen Electric | Electrical vapor detector |
BE523420A (en) * | 1952-10-11 | |||
GB749312A (en) * | 1953-05-02 | 1956-05-23 | Emi Ltd | Improvements in or relating to indirectly heated cathodes for electron discharge devices |
NL84939C (en) * | 1954-01-01 | |||
US2899664A (en) * | 1956-02-27 | 1959-08-11 | Electric heating units and methods of making the same | |
US2935709A (en) * | 1958-03-18 | 1960-05-03 | Ii William A Paine | Apparatus and method for strain rod assembly and filament core |
US3265924A (en) * | 1962-06-29 | 1966-08-09 | York Res Corp | Thermionic tube having novel heater and cathode |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH157162A (en) * | 1930-07-03 | 1932-09-15 | Gustav Ganz & Co | Indirectly heated hot cathode for discharge tubes. |
NL36127C (en) * | 1932-02-16 | |||
US2158665A (en) * | 1932-06-30 | 1939-05-16 | Hygrade Sylvania Corp | Electron discharge device |
-
0
- BE BE411406D patent/BE411406A/xx unknown
- NL NL42560D patent/NL42560C/xx active
-
1935
- 1935-03-06 GB GB7041/35A patent/GB453154A/en not_active Expired
- 1935-10-19 US US45701A patent/US2164913A/en not_active Expired - Lifetime
- 1935-10-31 FR FR798600D patent/FR798600A/en not_active Expired
-
1936
- 1936-02-08 DE DEI54281D patent/DE755099C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2164913A (en) | 1939-07-04 |
FR798600A (en) | 1936-05-20 |
BE411406A (en) | |
NL42560C (en) | |
DE755099C (en) | 1953-10-26 |
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