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GB453154A - Improvements in or relating to indirectly heated cathodes for thermionic valves - Google Patents

Improvements in or relating to indirectly heated cathodes for thermionic valves

Info

Publication number
GB453154A
GB453154A GB7041/35A GB704135A GB453154A GB 453154 A GB453154 A GB 453154A GB 7041/35 A GB7041/35 A GB 7041/35A GB 704135 A GB704135 A GB 704135A GB 453154 A GB453154 A GB 453154A
Authority
GB
United Kingdom
Prior art keywords
indirectly heated
relating
wires
thermionic valves
heated cathodes
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
GB7041/35A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 BE411406D priority Critical patent/BE411406A/xx
Priority to NL42560D priority patent/NL42560C/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB7041/35A priority patent/GB453154A/en
Priority to US45701A priority patent/US2164913A/en
Priority to FR798600D priority patent/FR798600A/en
Priority to DEI54281D priority patent/DE755099C/en
Publication of GB453154A publication Critical patent/GB453154A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

453,154. Thermionic cathodes. STANDARD TELEPHONES & CABLES, Ltd., and GOODCHILD, F. D., 63, Aldwych, London. March 6, 1935, No. 7041. [Class 39 (i)] The heater for an indirectly heated cathode is formed by insulating lengths of wire with say aluminium oxide and then placing two or more wires c, d, parallel to each other and coating them again so that the finished heater is formed of parallel wires encased in insulation. The wires may be bent and inserted as a block into the cathode body. Dimensions of one example are given. They are connected together to make a continuous heating circuit.
GB7041/35A 1935-03-06 1935-03-06 Improvements in or relating to indirectly heated cathodes for thermionic valves Expired GB453154A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE411406D BE411406A (en) 1935-03-06
NL42560D NL42560C (en) 1935-03-06
GB7041/35A GB453154A (en) 1935-03-06 1935-03-06 Improvements in or relating to indirectly heated cathodes for thermionic valves
US45701A US2164913A (en) 1935-03-06 1935-10-19 Indirectly heated cathode
FR798600D FR798600A (en) 1935-03-06 1935-10-31 Improvements to indirectly heated cathodes for thermal valves or the like
DEI54281D DE755099C (en) 1935-03-06 1936-02-08 Indirectly heated glow cathode designed as a flat cathode for electron tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7041/35A GB453154A (en) 1935-03-06 1935-03-06 Improvements in or relating to indirectly heated cathodes for thermionic valves

Publications (1)

Publication Number Publication Date
GB453154A true GB453154A (en) 1936-09-07

Family

ID=9825498

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7041/35A Expired GB453154A (en) 1935-03-06 1935-03-06 Improvements in or relating to indirectly heated cathodes for thermionic valves

Country Status (6)

Country Link
US (1) US2164913A (en)
BE (1) BE411406A (en)
DE (1) DE755099C (en)
FR (1) FR798600A (en)
GB (1) GB453154A (en)
NL (1) NL42560C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487695A (en) * 1946-11-29 1949-11-08 North American Geophysical Com Electric heating element
US2742585A (en) * 1952-08-22 1956-04-17 Gen Electric Electrical vapor detector
NL87447C (en) * 1952-10-11
GB749312A (en) * 1953-05-02 1956-05-23 Emi Ltd Improvements in or relating to indirectly heated cathodes for electron discharge devices
NL84939C (en) * 1954-01-01
US2899664A (en) * 1956-02-27 1959-08-11 Electric heating units and methods of making the same
US2935709A (en) * 1958-03-18 1960-05-03 Ii William A Paine Apparatus and method for strain rod assembly and filament core
US3265924A (en) * 1962-06-29 1966-08-09 York Res Corp Thermionic tube having novel heater and cathode

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH157162A (en) * 1930-07-03 1932-09-15 Gustav Ganz & Co Indirectly heated hot cathode for discharge tubes.
NL36127C (en) * 1932-02-16
US2158665A (en) * 1932-06-30 1939-05-16 Hygrade Sylvania Corp Electron discharge device

Also Published As

Publication number Publication date
BE411406A (en)
US2164913A (en) 1939-07-04
DE755099C (en) 1953-10-26
NL42560C (en)
FR798600A (en) 1936-05-20

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