GB531821A - Improvements in or relating to electron-discharge devices - Google Patents
Improvements in or relating to electron-discharge devicesInfo
- Publication number
- GB531821A GB531821A GB1559739A GB1559739A GB531821A GB 531821 A GB531821 A GB 531821A GB 1559739 A GB1559739 A GB 1559739A GB 1559739 A GB1559739 A GB 1559739A GB 531821 A GB531821 A GB 531821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- multiplier
- electrode
- electrodes
- electron
- 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
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
531,821. Thermionic valves; electron multipliers. BOSCH, F. J. G. VAN DEN, and VACUUM-SCIENCE PRODUCTS, Ltd. May 25, 1939, Nos. 15597 and 24204. [Class 39 (i)] The cathode of an electronmultiplier is formed as a tube having an enlarged end forming an emissive surface for the multiplier the body of the tube forming a cathode for a further electrode assembly. In the arrangement shown the electron multiplier comprises a number of perforated secondary electrodes 15 ... 19, as described in Specification 516,621 provided with auxiliary electrodes 22 as described in Specification 531,541. The cathode 10 is formed with an enlarged head 11 co-operating with the electrode multiplier and the body of the tube is surrounded by a grid 23 and anode 24 forming a triode assembly. The cathode heater is so arranged that the body of the cathode operates at a higher temperature than the head. The triode and multiplier assemblies are separated by a screen 25, 26 having an opening for the cathode head The triode assembly is utilized to produce oscillations which are communicated to one of two electrodes 12, 13 controlling the discharge to the electron multiplier, incoming signals being applied to the other electrode. An electrode 14 between the electrodes 12, 13 directs the electrons to the multiplier system.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1559739A GB531821A (en) | 1939-05-25 | 1939-05-25 | Improvements in or relating to electron-discharge devices |
| FR865749D FR865749A (en) | 1939-05-25 | 1940-05-21 | Electron discharge device |
| US443154A US2342987A (en) | 1939-05-25 | 1942-05-15 | Frequency changing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1559739A GB531821A (en) | 1939-05-25 | 1939-05-25 | Improvements in or relating to electron-discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB531821A true GB531821A (en) | 1941-01-13 |
Family
ID=10061982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1559739A Expired GB531821A (en) | 1939-05-25 | 1939-05-25 | Improvements in or relating to electron-discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB531821A (en) |
-
1939
- 1939-05-25 GB GB1559739A patent/GB531821A/en not_active Expired
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