GB244196A - Improvements in thermionic valves - Google Patents
Improvements in thermionic valvesInfo
- Publication number
- GB244196A GB244196A GB2242924A GB2242924A GB244196A GB 244196 A GB244196 A GB 244196A GB 2242924 A GB2242924 A GB 2242924A GB 2242924 A GB2242924 A GB 2242924A GB 244196 A GB244196 A GB 244196A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- enclosed
- anode
- cathode
- 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
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
244,196. Hector, S. Sept. 23, 1924. Vacuum tubes. - In thermionic valves with two, three or more electrodes and of the kind in which electron emission is promoted by an electrically - heated element enclosed in a space separated from the evacuated space containing the other electrodes of the valve, the spaces are separated by a glass wall, preferably in the focus of a reentrant pocket 5 coaxial with the anode 2, grid 3, and bulb 1. The pocket 5 may be surrounded by a conducting covering forming the' cathode and heated by the heating element 6 or the element 6 may form the cathode. The element 6 may be in an exhausted or non-exhausted space and may be removable and replaceable. The element 6 may be enclosed directly in the pocket 5 and spirally wound on a removable rod 8 with contacts 11 engaging contacts 12 in the base 10 connected with the pins 13. In a modification, the heating element may comprise a filament enclosed in a sealed tubular quartz-glass or like container inserted into the pocket 5 and provided with contact-caps or contacts engaging contacts sealed to the pocket 5. The anode and grid may ba supported by wires 4, 4<1>.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2242924A GB244196A (en) | 1924-09-23 | 1924-09-23 | Improvements in thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2242924A GB244196A (en) | 1924-09-23 | 1924-09-23 | Improvements in thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB244196A true GB244196A (en) | 1925-12-17 |
Family
ID=10179221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2242924A Expired GB244196A (en) | 1924-09-23 | 1924-09-23 | Improvements in thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB244196A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424526A (en) * | 1943-01-11 | 1947-07-22 | Gen Electric | Electric discharge device |
-
1924
- 1924-09-23 GB GB2242924A patent/GB244196A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424526A (en) * | 1943-01-11 | 1947-07-22 | Gen Electric | Electric discharge device |
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