GB432623A - Improvements in and relating to electron valves - Google Patents
Improvements in and relating to electron valvesInfo
- Publication number
- GB432623A GB432623A GB34583/34A GB3458334A GB432623A GB 432623 A GB432623 A GB 432623A GB 34583/34 A GB34583/34 A GB 34583/34A GB 3458334 A GB3458334 A GB 3458334A GB 432623 A GB432623 A GB 432623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinders
- given
- pair
- axis
- polepieces
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/68—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
432,623. Thermionic valves. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN MEAF, (formerly NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN), 30, Croeselaan, Utrecht, Holland. Dec. 1, 1934, No. 34583. Convention date, Dec. 16, 1933. [Class 39 (i)] A valve, particularly for short-wave use, has an electrode arrangement consisting of four hyperbolic cylinders having their vertex lines parallel to a common axis and spaced apart by 90‹ about this axis, and one opposing pair is given a positive potential whilst the other is given a negative potential, these potentials being proportional to the square of the distances of the vertex lines from the axis. The arrangement produces a paraboliform field in which the electrons oscillate without damping. The electrodes may be such that any cross-section perpendicular to the axis is a pair of congruent equilateral hyperbolas. In one form, Fig. 3, the electrodes are hyperbolic cylinders 22, 23, 24, 25 of which the pair 22, 23 are connected to the plate 21 carrying the cylinders, the pair 24, 25 being insulated therefrom. Hot wire cathodes 26, 27 are mounted in grooves in the ends of the vertex lines of the cylinders 22, 23 and the cylinders 24, 25 are given a high positive voltage. A horse-shoe magnet 32 is provided to concentrate the beam of electrons in the plane joining the vertex lines of cylinders 22, 23, and has limbs 33 housed in the troughs of these cylinders and a yoke 34 behind the plate 21. A dipole aerial 36 is connected by an energy line 35 to the cylinders 22, 23. In a modification an electromagnet is used having a winding on the yoke, and polepieces of ferro-magnetic material covered at their surfaces in which hot-wire oxide cathodes are mounted with copper, silver or gold. The free ends of the polepieces are coupled with an aerial outside the tube and the polepieces may be given a weakly negative voltage relative to the hotwire cathodes, which may be hairpin-shaped and may be provided with an insulating member between their limbs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE432623X | 1933-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB432623A true GB432623A (en) | 1935-07-30 |
Family
ID=6494473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34583/34A Expired GB432623A (en) | 1933-12-16 | 1934-12-01 | Improvements in and relating to electron valves |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR782344A (en) |
| GB (1) | GB432623A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE967231C (en) * | 1940-10-22 | 1957-10-24 | Pintsch Bamag Ag | Device for fanning (generating, amplifying or receiving) ultra-short electrical waves, in particular the decimeter or centimeter wave range |
-
1934
- 1934-12-01 GB GB34583/34A patent/GB432623A/en not_active Expired
- 1934-12-05 FR FR782344D patent/FR782344A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR782344A (en) | 1935-06-03 |
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