GB403973A - Improvements in or relating to electronic amplifier valves - Google Patents
Improvements in or relating to electronic amplifier valvesInfo
- Publication number
- GB403973A GB403973A GB1889032A GB1889032A GB403973A GB 403973 A GB403973 A GB 403973A GB 1889032 A GB1889032 A GB 1889032A GB 1889032 A GB1889032 A GB 1889032A GB 403973 A GB403973 A GB 403973A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- cathode
- screen
- control electrode
- slit
- 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
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
- H01J31/04—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with only one or two output electrodes with only two electrically independant groups or electrodes
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
403,973. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, RUST, N. M., 109, London Road, Chelmsford, and BRETT, G. F., 23, Cross Flatts Avenue, Dewsbury Road, Leeds. July 4, 1932, No. 18890. [Class 39 (i).] An amplifier has an anode, a cathode, a control electrode placed close to the cathode, and a screen electrode placed close to the cathode and control electrode and arranged so as to allow only a narrow or small beam of electrons to pass to the anode. As shown, the cathode consists of a short filament F, the control electrode consists of a flattened cylinder G forming a Wehnelt electrode, and the screen electrode consists of a plate A with a slit A<1>. The anode P consists of a flattened cylinder closed at one end ; it is elongated to prevent the escape of secondary electrons or it may be closed by a grid. The screen A may be maintained at the potential of the anode. In a modification the anode is a plate, and a second screen, formed as a grid, is placed near the anode and connected with the cathode so as to prevent secondary emission ; or the second screen may be in the form of a plate with a slit and maintained at zero or a low potential. In another arrangement the cathode is of hairpin shape giving emission from a point, and the control electrode G, the slit A<1> and the anode are of circular shape. Dimensions and potentials are given.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1889032A GB403973A (en) | 1932-07-04 | 1932-07-04 | Improvements in or relating to electronic amplifier valves |
| DEM124303D DE755195C (en) | 1932-07-04 | 1933-07-02 | Cathode ray amplifier tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1889032A GB403973A (en) | 1932-07-04 | 1932-07-04 | Improvements in or relating to electronic amplifier valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB403973A true GB403973A (en) | 1934-01-04 |
Family
ID=10120177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1889032A Expired GB403973A (en) | 1932-07-04 | 1932-07-04 | Improvements in or relating to electronic amplifier valves |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE755195C (en) |
| GB (1) | GB403973A (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE316011C (en) * | ||||
| US1757345A (en) * | 1930-05-06 | Radio tube | ||
| FR345942A (en) * | 1903-12-31 | 1904-12-22 | Louis Alfred De Mayo | Devices allowing ships to make their coal |
| US1613626A (en) * | 1918-09-30 | 1927-01-11 | Western Electric Co | Space discharge system |
| AT115564B (en) * | 1929-06-12 | 1929-12-27 | Ver Gluehlampen & Elec Ag | Method and device for registering rapid phenomena by means of cathode rays. |
| BE374539A (en) * | 1929-11-16 | |||
| GB363084A (en) * | 1929-12-02 | 1931-12-17 | Arcturus Radio Tube Co | Improvements in or relating to thermionic tubes |
-
1932
- 1932-07-04 GB GB1889032A patent/GB403973A/en not_active Expired
-
1933
- 1933-07-02 DE DEM124303D patent/DE755195C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE755195C (en) | 1951-11-08 |
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