GB518898A - Improvements in or relating to thermionic valves - Google Patents
Improvements in or relating to thermionic valvesInfo
- Publication number
- GB518898A GB518898A GB26195/38A GB2619538A GB518898A GB 518898 A GB518898 A GB 518898A GB 26195/38 A GB26195/38 A GB 26195/38A GB 2619538 A GB2619538 A GB 2619538A GB 518898 A GB518898 A GB 518898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slots
- screen
- grid
- electrode
- sept
- 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
-
- 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
- H01J2893/001—Non-constructive schematic arrangements
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
518,898. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Sept. 7, 1938, No. 26195. Convention date, Sept. 7, 1937. [Class 39 (i)] In a valve wherein the screen 5 is of box form having slots O for the electron flow, the edges q of the slots are ground sharp to present a single edge and reduce noise ; the screen may be formed of two connected plates separated to form the slots. A grid F may be used between the screen and anode A and a concentrating electrode B between the screen and control grid G ; the electrode B may be replaced by forming the supports for the grid G of curved metal strips. The electrode B may be used for gain control, modulation control or for mixing. The edges q of the slots in the electrodes B, S may be parallel to each other or inclined for use with a variable mu grid ; or they may be curved.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE518898X | 1937-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB518898A true GB518898A (en) | 1940-03-11 |
Family
ID=6550268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26195/38A Expired GB518898A (en) | 1937-09-07 | 1938-09-07 | Improvements in or relating to thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB518898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837673A (en) * | 1955-01-17 | 1958-06-03 | Sylvania Electric Prod | Frequency converter tube |
-
1938
- 1938-09-07 GB GB26195/38A patent/GB518898A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837673A (en) * | 1955-01-17 | 1958-06-03 | Sylvania Electric Prod | Frequency converter tube |
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