GB289381A - Improvements in or relating to gas filled discharge vessels, more particularly for use as rectifiers - Google Patents

Improvements in or relating to gas filled discharge vessels, more particularly for use as rectifiers

Info

Publication number
GB289381A
GB289381A GB11706/28A GB1170628A GB289381A GB 289381 A GB289381 A GB 289381A GB 11706/28 A GB11706/28 A GB 11706/28A GB 1170628 A GB1170628 A GB 1170628A GB 289381 A GB289381 A GB 289381A
Authority
GB
United Kingdom
Prior art keywords
thorium
core
rectifiers
relating
gas filled
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
GB11706/28A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB289381A publication Critical patent/GB289381A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes

Landscapes

  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

289,381. Siemens &. Halske Akt.- Ges. April 25, 1927, [Convention date]. Vacuum tubes; low-pressure metallic-vapour apparatus. - A gas discharge device such as a rectifier consists of a tungsten core having a surface formed of an alloy of the metal of the core with a high percentage content of thorium or uranium. The alloy may be formed by coating the core with thorium azide or hydride and heating for a short time; or a coating of thorium nitrate with a matetial such as magnesium or carbon may be applied. The filling may be a rare gas or mercury vapour at a pressure of 0.01 mm. of mercury. Specification 182,699 is referred to.
GB11706/28A 1927-04-25 1928-04-20 Improvements in or relating to gas filled discharge vessels, more particularly for use as rectifiers Expired GB289381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE289381X 1927-04-25

Publications (1)

Publication Number Publication Date
GB289381A true GB289381A (en) 1929-07-22

Family

ID=6059799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11706/28A Expired GB289381A (en) 1927-04-25 1928-04-20 Improvements in or relating to gas filled discharge vessels, more particularly for use as rectifiers

Country Status (2)

Country Link
FR (1) FR653321A (en)
GB (1) GB289381A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525810A1 (en) * 1982-04-23 1983-10-28 Raytheon Co METHOD FOR MANUFACTURING A CATHODE ELECTRODE FOR ELECTRON DISCHARGE APPARATUS AND ELECTRODE OBTAINED BY THIS METHOD

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525810A1 (en) * 1982-04-23 1983-10-28 Raytheon Co METHOD FOR MANUFACTURING A CATHODE ELECTRODE FOR ELECTRON DISCHARGE APPARATUS AND ELECTRODE OBTAINED BY THIS METHOD
GB2119565A (en) * 1982-04-23 1983-11-16 Raytheon Co Method of making a cathode electrode and product of such method
DE3314668A1 (en) * 1982-04-23 1983-11-24 Raytheon Co., 02173 Lexington, Mass. METHOD FOR PRODUCING CATHODES, IN PARTICULAR FOR MAGNETRONS, AND IN PARTICULAR MANUFACTURED CATHODE BY SUCH A METHOD

Also Published As

Publication number Publication date
FR653321A (en) 1929-03-20

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