GB746753A - Improvements in or relating to valves of the travelling wave type - Google Patents
Improvements in or relating to valves of the travelling wave typeInfo
- Publication number
- GB746753A GB746753A GB2441052A GB2441052A GB746753A GB 746753 A GB746753 A GB 746753A GB 2441052 A GB2441052 A GB 2441052A GB 2441052 A GB2441052 A GB 2441052A GB 746753 A GB746753 A GB 746753A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rods
- base
- gun
- helix
- ceramic
- 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
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/06—Electron or ion guns
- H01J23/065—Electron or ion guns producing a solid cylindrical beam
Landscapes
- Microwave Tubes (AREA)
Abstract
746,753. Travelling wave tubes. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. Sept. 30, 1952 [Oct. 1, 1951], No. 24410/52. Class 39 (1). In a travelling wave tube supporting means for the gun electrodes project from one side of support member 1 and tube 3 in which the helix 4 is located extends from the opposite side of member 1, the member 1 extending perpendicular to the tube axis, and the gun and its supports are enclosed in a tube envelope portion 14 which may be formed in part by common supporting member 1. In one form metal rods 2 serving as gun supports and leads are sealed through glass or ceramic envelope base 1. They may be spaced unequally around a circle, rod 2 connected to helix 4 in particular being widely spaced from the other rods. Glass envelope portion 3 which is in contact with the helix 4 directly or through intermediate angularly spaced insulating strips is sealed to base 1 using a jig to make it accurately concentric with the circle of rods 2 and with its axis parallel to rods 2. The gun electrodes comprising indirectly heated cathode 7, wehnelt cylinder 6 and anode 5 are assembled as a unitary structure by ceramic supports 9, 10 and mica member 11 mounted on three supporting rods 12, and this structure is then threaded over three rods 2 and attached thereto by eyelets 13. Alternatively rods 12 may be dispensed with and the insulating members 9-11 assembled directly on to rods 2, but this is not preferred. The assembly can be precision checked by shining a beam of light through a hole in the centre of cathode 7 along the axis of the system. After final adjustments the envelope is completed by sealing glass, ceramic or metal bulb 14 to base 1 at 15, the device is evacuated and sealed off at 16. In a modification operating with an external coil or magnet for focusing a high-beam current, supporting members 2 are secured to base 1 but do not pass through it, and separate current leads to electrodes 4-7 are taken through the envelope portion near the cathode. If base 1 is of metal, a similar construction is used to the latter case, separate current leads being taken through a glass base at the upper end of 14. In another modification, rods 2 are dispensed with and the gun structure carried on rods 12 is mounted by securing ceramic member 9 to an accurately ground part of the metal base 1 or to an accurately ground intermediate member mounted on the base. The helix may be replaced by any other form of retardation line.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB16988A DE887848C (en) | 1951-10-02 | 1951-10-02 | Running field pipes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB746753A true GB746753A (en) | 1956-03-21 |
Family
ID=6648464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2441052A Expired GB746753A (en) | 1951-10-02 | 1952-09-30 | Improvements in or relating to valves of the travelling wave type |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE887848C (en) |
FR (1) | FR1068084A (en) |
GB (1) | GB746753A (en) |
NL (2) | NL86192C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL207090A (en) * | 1955-05-12 |
-
0
- NL NLAANVRAGE7311217,A patent/NL172734C/en active
- NL NL86192D patent/NL86192C/xx active
-
1951
- 1951-10-02 DE DEB16988A patent/DE887848C/en not_active Expired
-
1952
- 1952-09-30 FR FR1068084D patent/FR1068084A/en not_active Expired
- 1952-09-30 GB GB2441052A patent/GB746753A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1068084A (en) | 1954-06-22 |
NL86192C (en) | |
NL172734C (en) | |
DE887848C (en) | 1953-08-27 |
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