GB497115A - Improvements in large thermionic valves - Google Patents
Improvements in large thermionic valvesInfo
- Publication number
- GB497115A GB497115A GB3561637A GB3561637A GB497115A GB 497115 A GB497115 A GB 497115A GB 3561637 A GB3561637 A GB 3561637A GB 3561637 A GB3561637 A GB 3561637A GB 497115 A GB497115 A GB 497115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cap
- grid
- control grid
- lead
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/32—Anodes
- H01J19/34—Anodes forming part of the envelope
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0002—Construction arrangements of electrode systems
- H01J2893/0003—Anodes forming part of vessel walls
Landscapes
- Hybrid Cells (AREA)
Abstract
497,115. Thermionic valves. M-O VALVE CO., Ltd., and LE ROSSIGNOL, R. Dec. 23, 1937, No. 35616. [Class 39 (i)] In large thermionic valves of the type in which at least one screening electrode shields the control grid from the anode, a metal cap 14 is fixed to the exterior of the valve, but is joined to and effectively continues the screening electrode within the valve, and an aperture 22 is provided in the cap through which the shielded lead 23 to the control grid 8 is adapted to pass so as to connect the control grid to the shielded remainder of the input circuit. The opening 22 is surrounded by a short cylinder 25 which telescopes into a cylinder 26 between the cap 14 and the box 24 containing the valve of a previous stage. The embodiment described consists of a valve having an external water-cooled anode 1, cathode 6, control grid 8 screen grid 10 and suppressor grid 11, which is connected to the cap 14 by the lead 13 and the extension 12 passing between the walls of the re-entrant glass foot tube 3. The lead 5, 17 to cathode and screen grid pass through insulating bushes 16, 18 and a condenser 21 is connected between the leads 13 and 17.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3561637A GB497115A (en) | 1937-12-23 | 1937-12-23 | Improvements in large thermionic valves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3561637A GB497115A (en) | 1937-12-23 | 1937-12-23 | Improvements in large thermionic valves |
Publications (1)
Publication Number | Publication Date |
---|---|
GB497115A true GB497115A (en) | 1938-12-13 |
Family
ID=10379698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3561637A Expired GB497115A (en) | 1937-12-23 | 1937-12-23 | Improvements in large thermionic valves |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB497115A (en) |
-
1937
- 1937-12-23 GB GB3561637A patent/GB497115A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB556046A (en) | Improvements relating to electron guns such as are used in cathode ray tubes | |
GB546507A (en) | Cathode ray tube circuits | |
GB497115A (en) | Improvements in large thermionic valves | |
GB538381A (en) | Improvements in or relating to thermionic valve apparatus | |
GB498577A (en) | Improved circuit arrangement comprising a discharge tube | |
GB645937A (en) | Improvements in or relating to velocity-modulated electron discharge devices | |
GB475772A (en) | Improvements in electric discharge tubes | |
GB461450A (en) | Improvements in or relating to electric discharge devices | |
GB490566A (en) | Improvements in high frequency pentodes | |
GB520041A (en) | Improvements in or relating to thermionic valves | |
GB471672A (en) | Improvements in or relating to electron discharge devices | |
GB716684A (en) | Electron tubes | |
GB464064A (en) | Back-coupled circuit for cathode-ray tube, more especially for television purposes | |
US2040267A (en) | Electron discharge device | |
GB609845A (en) | Improvements in or relating to circuits for electric discharge tubes | |
GB537276A (en) | Electron discharge devices incorporating electron multipliers | |
GB481549A (en) | Cathode ray discharge devices | |
GB619767A (en) | Improvements in electronic discharge devices | |
GB498566A (en) | Improvements in electron multipliers | |
GB382540A (en) | Improvements relating to electron discharge tubes | |
GB541919A (en) | Improvements in controlled rectifiers with thermionic cathodes | |
GB518580A (en) | Improvements in or relating to cathode ray tubes | |
GB552846A (en) | Improvements in devices of the electrostatically-controlled arc discharge type | |
GB507270A (en) | Electron discharge devices | |
GB614813A (en) | A circuit-arrangement comprising a secondary electron-emission tube |