GB478373A - Improvements in cathodes and other electrodes of thermionic discharge apparatus - Google Patents

Improvements in cathodes and other electrodes of thermionic discharge apparatus

Info

Publication number
GB478373A
GB478373A GB2091036A GB2091036A GB478373A GB 478373 A GB478373 A GB 478373A GB 2091036 A GB2091036 A GB 2091036A GB 2091036 A GB2091036 A GB 2091036A GB 478373 A GB478373 A GB 478373A
Authority
GB
United Kingdom
Prior art keywords
cathodes
cathode
electrodes
wires
class
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
GB2091036A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
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 NL49371D priority Critical patent/NL49371C/xx
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB2091036A priority patent/GB478373A/en
Priority to DEA83757D priority patent/DE704278C/en
Priority to FR824874D priority patent/FR824874A/en
Publication of GB478373A publication Critical patent/GB478373A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape

Landscapes

  • Discharge Lamp (AREA)
  • Microwave Tubes (AREA)

Abstract

478,373. Thermionic valves. DODDS, J. M., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. July 28, 1936, No. 20910. [Class 39 (i)] A filamentary cathode consists of a number of wires a arranged in parallel and equiangularly with respect to two straight molybdenum supports b. Two or more such elements may be mounted to form a circular cathode' 1, Fig. 2, the supports b being held in clamps on pipes for cooling medium. A control or screen grid 6 may be similarly constructed and supported. The cathode may be oval shape in crosssection, and the construction is suitable for delta connected cathodes. An example giving sizes of the wires &c. is described. Specification 235,295, [Class 39 (i)] is referred to.
GB2091036A 1936-07-28 1936-07-28 Improvements in cathodes and other electrodes of thermionic discharge apparatus Expired GB478373A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL49371D NL49371C (en) 1936-07-28
GB2091036A GB478373A (en) 1936-07-28 1936-07-28 Improvements in cathodes and other electrodes of thermionic discharge apparatus
DEA83757D DE704278C (en) 1936-07-28 1937-07-28 Immediately heated cathode for electrical discharge vessels
FR824874D FR824874A (en) 1936-07-28 1937-07-28 Improvements to cathodes and other electrodes of thermionic discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2091036A GB478373A (en) 1936-07-28 1936-07-28 Improvements in cathodes and other electrodes of thermionic discharge apparatus

Publications (1)

Publication Number Publication Date
GB478373A true GB478373A (en) 1938-01-18

Family

ID=10153866

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2091036A Expired GB478373A (en) 1936-07-28 1936-07-28 Improvements in cathodes and other electrodes of thermionic discharge apparatus

Country Status (4)

Country Link
DE (1) DE704278C (en)
FR (1) FR824874A (en)
GB (1) GB478373A (en)
NL (1) NL49371C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744452C (en) * 1940-03-29 1944-01-19 Aeg Immediately heated cathode, especially for high-performance tubes
DE907677C (en) * 1938-10-09 1954-03-29 Aeg Directly heated cathode consisting of two coils lying in a common cylindrical surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE907677C (en) * 1938-10-09 1954-03-29 Aeg Directly heated cathode consisting of two coils lying in a common cylindrical surface
DE744452C (en) * 1940-03-29 1944-01-19 Aeg Immediately heated cathode, especially for high-performance tubes

Also Published As

Publication number Publication date
FR824874A (en) 1938-02-17
NL49371C (en)
DE704278C (en) 1941-03-27

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