GB498347A - Improvements in electric discharge tubes for amplifying or generating electric oscillations - Google Patents
Improvements in electric discharge tubes for amplifying or generating electric oscillationsInfo
- Publication number
- GB498347A GB498347A GB32265/37A GB3226537A GB498347A GB 498347 A GB498347 A GB 498347A GB 32265/37 A GB32265/37 A GB 32265/37A GB 3226537 A GB3226537 A GB 3226537A GB 498347 A GB498347 A GB 498347A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- anode
- electrode
- electrodes
- rods
- 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
- H01J21/02—Tubes with a single discharge path
- H01J21/06—Tubes with a single discharge path having electrostatic control means only
- H01J21/10—Tubes with a single discharge path having electrostatic control means only with one or more immovable internal control electrodes, e.g. triode, pentode, octode
- H01J21/14—Tubes with means for concentrating the electron stream, e.g. beam tetrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0029—Electron beam tubes
Landscapes
- Discharge Lamp (AREA)
Abstract
498,347. Thermionic valves. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 23, 1937, No. 32265. Convention date, Nov. 26, 1936. [Class 39 (i)] An electric discharge tube for amplifying or generating electric oscillations is provided with a cylindrical tubular cathode 2, an anode 4 and two or more other electrodes, one of which consists of only a few rods 3 or plates which are arranged parallel with the axis of the cathode and by means of which electrons from the cathode are united into beams, means being provided near the extremities of the electrode system to control the shape of the cross-section of the electron beams in a direction parallel with the axis of the cathode. The control means may comprise rods 6 arranged at the ends of the system and connected to the cathode or to the control rods 3, the connection being made, if desired, within the tube. Plates or discs 5 may also be used in addition to or instead of the rods 6. An apertured intercepting electrode is arranged in front of the anode 4 or the anode may be apertured and arranged in front of a plate electrode. Grids may be provided between these electrodes or. between the control electrodes 3 and the intercepting electrode, one of which may serve as a screening grid. The anode may be coated with fluorescent material so that the form of the spot may be observed. A straight or exponential characteristic may be obtained by using intercepting electrodes having gauze covered apertures of predetermined shape, and a secondary-emitting electrode may be provided on the far side of a gauze anode, which may then be apertured to serve also as the intercepting electrode. The cathode tube 2 may be directly or indirectly heated and of circular, rectangular or elliptical crosssection.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE498347X | 1936-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB498347A true GB498347A (en) | 1939-01-06 |
Family
ID=6545287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32265/37A Expired GB498347A (en) | 1936-11-26 | 1937-11-23 | Improvements in electric discharge tubes for amplifying or generating electric oscillations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB498347A (en) |
-
1937
- 1937-11-23 GB GB32265/37A patent/GB498347A/en not_active Expired
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