GB418828A - Improvements in or relating to gasfilled triodes, tetrodes, pentodes and the like - Google Patents
Improvements in or relating to gasfilled triodes, tetrodes, pentodes and the likeInfo
- Publication number
- GB418828A GB418828A GB1264833A GB1264833A GB418828A GB 418828 A GB418828 A GB 418828A GB 1264833 A GB1264833 A GB 1264833A GB 1264833 A GB1264833 A GB 1264833A GB 418828 A GB418828 A GB 418828A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- magnetic field
- anode
- cathode
- envelope
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/14—Magnetic means for controlling the discharge
Landscapes
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Lasers (AREA)
Abstract
418,828. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c/o General Electric Co., Wembley, Middlesex. May 1, 1933, Nos. 12648 and 35245. [Class 39 (i).] In a gas-filled tube, such as a triode, tetrode or pentode, the difference between the potentials on the grid necessary for starting and stopping the discharge is reduced by applying to the tube a magnetic field having a component perpendicular to the cathode to anode electron path. In one form an anode 4 surrounds a grid 3 and an indirectly-heated cathode 2 in a tube 1 having a filling of mercury vapour, and a solenoid 5 surrounding the tube produces a magnetic field parallel to the cathode 2. A permanent magnet may replace the solenoid 5, and either means for producing the field may be arranged inside the envelope. The magnetic field is preferably arranged so that the difference between the starting and stopping potentials is a minimum. The tube may be used in circuits, such as that described in Specification 389,917, which generate a square wave form. A suitable tube for use according to the invention is one in which the anode is of copper or other non-magnetic material and forms part of the envelope. Characteristic curves are given for a tube with and without a magnetic field.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1264833A GB418828A (en) | 1933-05-01 | 1933-05-01 | Improvements in or relating to gasfilled triodes, tetrodes, pentodes and the like |
| DEG87987D DE679657C (en) | 1933-05-01 | 1934-05-03 | Arrangement with gas or vapor-filled discharge vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1264833A GB418828A (en) | 1933-05-01 | 1933-05-01 | Improvements in or relating to gasfilled triodes, tetrodes, pentodes and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB418828A true GB418828A (en) | 1934-11-01 |
Family
ID=10008555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1264833A Expired GB418828A (en) | 1933-05-01 | 1933-05-01 | Improvements in or relating to gasfilled triodes, tetrodes, pentodes and the like |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE679657C (en) |
| GB (1) | GB418828A (en) |
-
1933
- 1933-05-01 GB GB1264833A patent/GB418828A/en not_active Expired
-
1934
- 1934-05-03 DE DEG87987D patent/DE679657C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE679657C (en) | 1939-08-11 |
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