GB514335A - Improvements in or relating to electron multipliers - Google Patents

Improvements in or relating to electron multipliers

Info

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
Application number
GB13174/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DEF4463D priority Critical patent/DE889657C/en
Priority to DEF4678D priority patent/DE901569C/en
Priority to NL87583A priority patent/NL59576C/xx
Priority to BE427837D priority patent/BE427837A/xx
Application filed by Fernseh GmbH filed Critical Fernseh GmbH
Priority to US205842A priority patent/US2216267A/en
Priority to GB13174/38A priority patent/GB514335A/en
Priority to FR837484D priority patent/FR837484A/en
Priority to DEF4516D priority patent/DE907097C/en
Publication of GB514335A publication Critical patent/GB514335A/en
Expired legal-status Critical Current

Links

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.
GB13174/38A 1937-05-04 1938-05-03 Improvements in or relating to electron multipliers Expired GB514335A (en)

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
GB13174/38A GB514335A (en) 1937-05-04 1938-05-03 Improvements in or relating to electron multipliers
FR837484D FR837484A (en) 1937-05-04 1938-05-03 Secondary electron amplifier
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
DE1031902B (en) * 1953-11-09 1958-06-12 Siemens Ag Albis Image converter tube
US4006376A (en) * 1975-02-28 1977-02-01 Rca Corporation Phototube having improved electron collection efficiency

Cited By (1)

* Cited by examiner, † Cited by third party
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
NL59576C (en) 1947-07-15
DE907097C (en) 1954-03-22
BE427837A (en) 1938-05-31
FR837484A (en) 1939-02-10
DE889657C (en) 1953-09-14
DE901569C (en) 1954-01-11
US2216267A (en) 1940-10-01

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