GB471800A - Improvements in or relating to electron discharge apparatus - Google Patents
Improvements in or relating to electron discharge apparatusInfo
- Publication number
- GB471800A GB471800A GB633/36A GB63336A GB471800A GB 471800 A GB471800 A GB 471800A GB 633/36 A GB633/36 A GB 633/36A GB 63336 A GB63336 A GB 63336A GB 471800 A GB471800 A GB 471800A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- cathode
- electrode
- electron
- collector
- 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
- H01J43/06—Electrode arrangements
- H01J43/18—Electrode arrangements using essentially more than one dynode
- H01J43/22—Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
471,800. Electron multipliers. WEISS, G. Jan. 8, 1936, Nos. 633, 634, and 636. Convention dates, Jan. 8, 1935, Feb. 1, 1935, and May 24, 1935. [Class 39 (i)] A multiplier comprises a cathode, a collecting anode, and a plurality of secondary emission electrodes which are pervious to an electron stream and are arranged in the path of the stream from cathode to anode. In one form, a number of thin metal grid or mesh electrodes, e.g. of silver, coated with caesium or other alkaline metal, are disposed between a cathode which may be photo-electric or thermionic, and a collecting electrode. In a modification, Fig. 2, the plate electrode 3 is secondary emitting and the electrode 1 is the collector. A number of parallel annular or rectangular mesh electrodes may be arranged above and at the side or centrally with respect to a photoelectric cathode and may be heated to increase their emission. A solenoid may concentrate the beam, and electrostatic or magnetic focusing means may project electron images from the cathode and secondary emitting electrodes onto succeeding electrodes. In another form, Fig. 8, a photo-electric cathode 2 may be arranged in a bottle-shaped tube 7, in the neck of which are arranged the secondary emitting electrodes 1, 101, 111, 121 and the collector 3. The Specification as open to inspection under Sect. 91 describes also the arrangement shown in Fig. 7 (Cancelled), wherein electron beams are accelerated by grids 4, 104, 114, 124 and impinge upon secondary emission electrodes 5, 105, 115, 125 and a collector electrode 3, and states that the secondary-emitting electrodes may be pervious foils. The Specification includes also the subject-matter of Specification 468,665. This does not appear in the Specification as accepted.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW95703D DE764272C (en) | 1935-01-08 | 1935-01-08 | Secondary electron multiplier |
US5758436A | 1936-01-04 | 1936-01-04 | |
US211730A US2243178A (en) | 1935-01-08 | 1938-06-04 | Electron multiplier |
Publications (1)
Publication Number | Publication Date |
---|---|
GB471800A true GB471800A (en) | 1937-09-08 |
Family
ID=48631020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB633/36A Expired GB471800A (en) | 1935-01-08 | 1936-01-08 | Improvements in or relating to electron discharge apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US2243178A (en) |
BE (1) | BE413168A (en) |
DE (1) | DE764272C (en) |
FR (1) | FR800440A (en) |
GB (1) | GB471800A (en) |
NL (2) | NL49747C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE763102C (en) * | 1937-02-11 | 1953-01-26 | Fernseh Gmbh | Electrode arrangement for multi-stage secondary electron multipliers |
DE751034C (en) * | 1937-02-16 | 1954-11-29 | Opta Radio A G | Secondary electron multiplier with photocathode and net-shaped impact electrodes |
DE765082C (en) * | 1937-09-27 | 1953-12-14 | Aeg | Photoelectric cell in which the photo and secondary emission cathodes are arranged opposite one another as full-surface electrodes |
DE745730C (en) * | 1938-03-04 | 1944-05-22 | Fernseh Gmbh | Series multiplier for high output currents |
DE742002C (en) * | 1939-03-30 | 1943-11-20 | Bosch Gmbh Robert | Tube transmitter |
FR2445018A1 (en) * | 1978-12-22 | 1980-07-18 | Anvar | ELECTRON MULTIPLIER TUBE WITH AXIAL MAGNETIC FIELD |
FR2955682B1 (en) | 2010-01-28 | 2012-03-16 | Paycool Int Ltd | METHOD FOR PROVIDING A DYNAMIC CODE THROUGH A TELEPHONE |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE437793C (en) * | 1926-11-27 | Philips Nv | Discharge tubes for generating secondary electrons | |
FR552185A (en) * | 1923-04-25 | |||
US1210678A (en) * | 1915-05-19 | 1917-01-02 | Western Electric Co | Thermionic amplifier. |
US1419547A (en) * | 1918-11-12 | 1922-06-13 | Cornelius D Ehret | Electronic apparatus |
US1450265A (en) * | 1919-04-18 | 1923-04-03 | Westinghouse Electric & Mfg Co | Hot-cathode tube |
US1721395A (en) * | 1921-05-24 | 1929-07-16 | Gen Electric | Electron-discharge apparatus |
GB180655A (en) * | 1921-05-24 | 1923-07-19 | British Thomson Houston Co Ltd | Improvements in and relating to electron discharge devices |
GB191038A (en) * | 1921-12-28 | 1924-01-17 | British Thomson Houston Co Ltd | Improvements in and relating to electric current amplifiers |
US1683134A (en) * | 1921-12-28 | 1928-09-04 | Gen Electric | Amplifier |
FR582428A (en) * | 1923-09-15 | 1924-12-18 | Multiple plate electron tube | |
US1748386A (en) * | 1925-10-21 | 1930-02-25 | Rca Corp | Electric discharge tube |
DE587113C (en) * | 1925-10-22 | 1933-10-30 | Siegmund Loewe Dr | Cathode for discharge tubes |
US1903569A (en) * | 1926-09-15 | 1933-04-11 | Kenneth W Jarvis | Electron tube |
CH158401A (en) * | 1930-09-25 | 1932-11-15 | Rca Corp | Method and device for receiving telegraphically transmitted images by means of a cathode ray tube. |
US1955899A (en) * | 1930-09-25 | 1934-04-24 | Rca Corp | Method and system for communication by television |
DE569873C (en) * | 1931-01-30 | 1933-02-09 | Zeiss Carl Fa | Device for illuminating dials on clocks |
-
0
- NL NL56644D patent/NL56644C/xx active
- NL NL49747D patent/NL49747C/xx active
- BE BE413168D patent/BE413168A/xx unknown
-
1935
- 1935-01-08 DE DEW95703D patent/DE764272C/en not_active Expired
-
1936
- 1936-01-08 GB GB633/36A patent/GB471800A/en not_active Expired
- 1936-01-08 FR FR800440D patent/FR800440A/en not_active Expired
-
1938
- 1938-06-04 US US211730A patent/US2243178A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
NL56644C (en) | |
DE764272C (en) | 1954-09-27 |
NL49747C (en) | |
BE413168A (en) | |
US2243178A (en) | 1941-05-27 |
FR800440A (en) | 1936-07-04 |
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