GB295343A - Improvements relating to thermionic valves or electron discharge tubes - Google Patents
Improvements relating to thermionic valves or electron discharge tubesInfo
- Publication number
- GB295343A GB295343A GB1228127A GB1228127A GB295343A GB 295343 A GB295343 A GB 295343A GB 1228127 A GB1228127 A GB 1228127A GB 1228127 A GB1228127 A GB 1228127A GB 295343 A GB295343 A GB 295343A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- mav
- electrodes
- led
- leads
- 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
- H01J21/00—Vacuum tubes
- H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
Landscapes
- Electron Sources, Ion Sources (AREA)
Abstract
295,343. Mullard, S. R., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). May 7, 1927. Vacuum tubes. - Thermionic valves passing current in one direction only contain in a single evacuated envelope two or more separate sets of grids 3 and anodes 4 disposed along the length of a single long, straight cathode 9 indirectly heated by a separate heater. The cathode 9 may comprise a metal cylinder coated with barium oxide and containing a straight or looped filament heater 10. To prevent. interaction, the electrode sets may be screened by metal discs 11, 12 projecting radially from, and at the potential of, the cathode cylinder. Leads to the electrodes are led through a single pinch 2 and through apertures in the discs 11, 12, or leads to the top set of electrodes may be led through the upper end of the bulb 1. The electrode sets mav be used as different stages in a radio receiver or the anode of one set may be connected to the grid of the next. The filament 10 mav emit electrons and may be used together with the cathode 9 as a rectifier in the anode voltage supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1228127A GB295343A (en) | 1927-05-07 | 1927-05-07 | Improvements relating to thermionic valves or electron discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1228127A GB295343A (en) | 1927-05-07 | 1927-05-07 | Improvements relating to thermionic valves or electron discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB295343A true GB295343A (en) | 1928-08-07 |
Family
ID=10001659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1228127A Expired GB295343A (en) | 1927-05-07 | 1927-05-07 | Improvements relating to thermionic valves or electron discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB295343A (en) |
-
1927
- 1927-05-07 GB GB1228127A patent/GB295343A/en not_active Expired
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