GB514335A - Improvements in or relating to electron multipliers - Google Patents
Improvements in or relating to electron multipliersInfo
- Publication number
- GB514335A GB514335A GB13174/38A GB1317438A GB514335A GB 514335 A GB514335 A GB 514335A GB 13174/38 A GB13174/38 A GB 13174/38A GB 1317438 A GB1317438 A GB 1317438A GB 514335 A GB514335 A GB 514335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aperture
- envelope
- partition
- electrode
- 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
- 238000005192 partition Methods 0.000 abstract 5
- 150000002500 ions Chemical class 0.000 abstract 2
- 239000011888 foil Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
-
- 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
- H01J43/08—Cathode arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/28—Vessels, e.g. wall of the tube; Windows; Screens; Suppressing undesired discharges or currents
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electron Tubes For Measurement (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
514,335. Electron multipliers. BAIRD TELEVISION, Ltd. (Fernseh Akt.-Ges.). May 3, 1938, No. 13174. [Class 39 (i)] The envelope 1 is divided into two or more portions by at least one partition 5 formed of insulating material which mechanically prevents the passage of electrons or ions and is provided with an aperture through which the main electron stream passes, the aperture being covered by an electron permeable electrode. Effects of-stray electrons and positive ions are eliminated. The partition 5 may be an annular - glass ring sealed to the envelope or an inward bulge formed in the envelope itself. The permeable electrode may be secondary-emitting as well as electrodes 4 (grids or foils). Two partitions are shown, but one may be provided between each secondary-emitting electrode. To facilitate insertion of the electrode system from, say, the right hand end of the envelope, all the electrodes to the left of a partition are made smaller than the aperture in it: as each permeable electrode is made larger than the aperture it covers, the apertures in the partitions increase in diameter from left to right. The cathode 2 may be photo-electric, or thermionic with control grid.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF4463D DE889657C (en) | 1937-05-04 | 1937-05-04 | Secondary electron amplifier |
DEF4678D DE901569C (en) | 1937-05-04 | 1938-02-19 | Photocell with secondary electron amplifier |
NL87583A NL59576C (en) | 1937-05-04 | 1938-04-28 | |
BE427837D BE427837A (en) | 1937-05-04 | 1938-04-30 | |
US205842A US2216267A (en) | 1937-05-04 | 1938-05-03 | Electron multiplier |
FR837484D FR837484A (en) | 1937-05-04 | 1938-05-03 | Secondary electron amplifier |
GB13174/38A GB514335A (en) | 1937-05-04 | 1938-05-03 | Improvements in or relating to electron multipliers |
DEF4516D DE907097C (en) | 1937-05-04 | 1939-10-29 | Photocell with built-in secondary amplifier |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF4463D DE889657C (en) | 1937-05-04 | 1937-05-04 | Secondary electron amplifier |
DEF4678D DE901569C (en) | 1937-05-04 | 1938-02-19 | Photocell with secondary electron amplifier |
GB13174/38A GB514335A (en) | 1937-05-04 | 1938-05-03 | Improvements in or relating to electron multipliers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB514335A true GB514335A (en) | 1939-11-06 |
Family
ID=32073732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13174/38A Expired GB514335A (en) | 1937-05-04 | 1938-05-03 | Improvements in or relating to electron multipliers |
Country Status (6)
Country | Link |
---|---|
US (1) | US2216267A (en) |
BE (1) | BE427837A (en) |
DE (3) | DE889657C (en) |
FR (1) | FR837484A (en) |
GB (1) | GB514335A (en) |
NL (1) | NL59576C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120028B (en) * | 1959-05-07 | 1961-12-21 | Bendix Corp | Secondary electron multiplier working with electric and magnetic fields |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE750071C (en) * | 1939-06-21 | 1944-12-12 | Process for the production of electron multipliers with electrodes of different secondary emissivity | |
GB745811A (en) * | 1951-03-27 | 1956-03-07 | Emi Ltd | Improvements relating to electron multipliers |
DE1087721B (en) * | 1953-11-09 | 1960-08-25 | Siemens Ag Albis | Image converter tube |
US4006376A (en) * | 1975-02-28 | 1977-02-01 | Rca Corporation | Phototube having improved electron collection efficiency |
-
1937
- 1937-05-04 DE DEF4463D patent/DE889657C/en not_active Expired
-
1938
- 1938-02-19 DE DEF4678D patent/DE901569C/en not_active Expired
- 1938-04-28 NL NL87583A patent/NL59576C/xx active
- 1938-04-30 BE BE427837D patent/BE427837A/xx unknown
- 1938-05-03 FR FR837484D patent/FR837484A/en not_active Expired
- 1938-05-03 GB GB13174/38A patent/GB514335A/en not_active Expired
- 1938-05-03 US US205842A patent/US2216267A/en not_active Expired - Lifetime
-
1939
- 1939-10-29 DE DEF4516D patent/DE907097C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1120028B (en) * | 1959-05-07 | 1961-12-21 | Bendix Corp | Secondary electron multiplier working with electric and magnetic fields |
Also Published As
Publication number | Publication date |
---|---|
DE907097C (en) | 1954-03-22 |
DE889657C (en) | 1953-09-14 |
BE427837A (en) | 1938-05-31 |
NL59576C (en) | 1947-07-15 |
DE901569C (en) | 1954-01-11 |
FR837484A (en) | 1939-02-10 |
US2216267A (en) | 1940-10-01 |
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