GB413166A - Improvements in and relating to controllable gas or vapour filled discharge tubes - Google Patents
Improvements in and relating to controllable gas or vapour filled discharge tubesInfo
- Publication number
- GB413166A GB413166A GB29865/33A GB2986533A GB413166A GB 413166 A GB413166 A GB 413166A GB 29865/33 A GB29865/33 A GB 29865/33A GB 2986533 A GB2986533 A GB 2986533A GB 413166 A GB413166 A GB 413166A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- grid
- grids
- discharge
- control
- 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
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
- H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control
Landscapes
- Gas-Filled Discharge Tubes (AREA)
- Electron Sources, Ion Sources (AREA)
Abstract
413,166. Discharge apparatus. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Oct. 27, 1933, No. 29865. Convention date, Oct. 27, 1932. [Classes 39 (i) and 40 (v).] A controllable gas- or vapour-filled discharge tube has an incandescent cathode, an anode, and two grids located one behind the other in the discharge path, the grids being connected to a control circuit which enables them to be switched over between themselves, or in conjunction with the anode, so as to transfer from a continuous to a discontinuous type of control and vice versa. In the example shown, the indirectly-heated cathode (not shown) is surrounded by a heat-conserving shield 1, and two pot-shaped grids 2 and 4 closed at the bottom by covers 3 and 5 which conserve the heat of the discharge and protect the pinch from undesirable radiation. Beyond them is a pot-shaped anode 6 which has no cover, the anode lead being taken through the top of the tube. The heater of the cathode is adapted to work directly from direct mains voltages of at least 110 volts. For discontinuous control, the grids are connected together, or the grid 4 may be connected to the anode, either directly or through resistances. For continuous control, the grid 2 is used as an ignition anode, giving a mixed ion and electron discharge, from which a pure stream of electrons is drawn by the anode 6 and is controlled by the grid 4. The grid 4 may have a smaller mesh than the grid 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE413166X | 1932-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB413166A true GB413166A (en) | 1934-07-12 |
Family
ID=6441292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29865/33A Expired GB413166A (en) | 1932-10-27 | 1933-10-27 | Improvements in and relating to controllable gas or vapour filled discharge tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2032137A (en) |
| FR (1) | FR762953A (en) |
| GB (1) | GB413166A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2620460A (en) * | 1941-04-10 | 1952-12-02 | Gen Motors Corp | Gas tube |
| BE454689A (en) * | 1943-03-06 | |||
| US2587481A (en) * | 1944-03-30 | 1952-02-26 | Frank J Kaehni | Electron compass |
| US2592556A (en) * | 1947-09-25 | 1952-04-15 | Kenneth J Germeshausen | Gaseous-discharge device |
| US2953702A (en) * | 1954-12-01 | 1960-09-20 | Philips Corp | Ionisation chamber for radiation measurements |
| DE1146985B (en) * | 1960-11-04 | 1963-04-11 | Siemens Ag | Semi-indirectly heated cathode for electron tubes |
| US3304456A (en) * | 1963-03-04 | 1967-02-14 | Gertrude P Copeland | Slot cathode |
| US3259783A (en) * | 1964-02-14 | 1966-07-05 | Thorn A E I Radio Valves & Tub | Indirectly-heated cathode assemblies |
-
1933
- 1933-10-26 FR FR762953D patent/FR762953A/en not_active Expired
- 1933-10-26 US US695245A patent/US2032137A/en not_active Expired - Lifetime
- 1933-10-27 GB GB29865/33A patent/GB413166A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR762953A (en) | 1934-04-21 |
| US2032137A (en) | 1936-02-25 |
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