GB282712A - Improvements relating to thermionic valves or electron discharge tubes - Google Patents
Improvements relating to thermionic valves or electron discharge tubesInfo
- Publication number
- GB282712A GB282712A GB26330/27A GB2633027A GB282712A GB 282712 A GB282712 A GB 282712A GB 26330/27 A GB26330/27 A GB 26330/27A GB 2633027 A GB2633027 A GB 2633027A GB 282712 A GB282712 A GB 282712A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- filament
- shields
- shield
- bulb
- 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
- H01J19/40—Screens for shielding
Landscapes
- Particle Accelerators (AREA)
Abstract
282,712. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Dec. 30, 1926, [Convention date]. Vacuum tubes. - A valve has a filament, one or more anodes of small dimensions, and one or more shields, which are maintained at a constant potential, and surround one or more grids, the shields acting as regards the shielding effect as continuation surfaces of the anode. As shown, a short anode e is mounted around a filament a and a grid d, and shields f, g of the same cross-section as the anode extend above and below the anode and are supported on it by means of glass beads k. A support c for the upper end of the filament also carries the shields and maintains them at the potential of the filament. A second support p is secured to the shield f. The anode lead may be taken to a contact on the cap or through the opposite end of the bulb. The shields serve to prevent electrostatic lines of force from passing from the grid to the outside of the anode, and also to prevent the passage of electrons from the filament to the bulb. In a modification, a shield surrounds the anode and extends beyond it on one or both sides. Apertures are formed in the shield around the anode to facilitate removal of gas by high frequency heating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL282712X | 1926-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB282712A true GB282712A (en) | 1928-03-15 |
Family
ID=19782359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26330/27A Expired GB282712A (en) | 1926-12-30 | 1927-10-05 | Improvements relating to thermionic valves or electron discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB282712A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2877374A (en) * | 1956-08-28 | 1959-03-10 | Itt | Guard ring diode |
| US2968742A (en) * | 1958-07-25 | 1961-01-17 | Standard Coil Prod Co Inc | High efficiency triode vacuum tube |
| US3119945A (en) * | 1957-12-31 | 1964-01-28 | Philips Corp | Electronic valve with co-planar anode and shield sections |
-
1927
- 1927-10-05 GB GB26330/27A patent/GB282712A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2877374A (en) * | 1956-08-28 | 1959-03-10 | Itt | Guard ring diode |
| US3119945A (en) * | 1957-12-31 | 1964-01-28 | Philips Corp | Electronic valve with co-planar anode and shield sections |
| US2968742A (en) * | 1958-07-25 | 1961-01-17 | Standard Coil Prod Co Inc | High efficiency triode vacuum tube |
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