FR980197A - Improvements to protection devices against filament failure - Google Patents

Improvements to protection devices against filament failure

Info

Publication number
FR980197A
FR980197A FR980197DA FR980197A FR 980197 A FR980197 A FR 980197A FR 980197D A FR980197D A FR 980197DA FR 980197 A FR980197 A FR 980197A
Authority
FR
France
Prior art keywords
protection devices
devices against
filament failure
against filament
failure
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
Other languages
French (fr)
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.)
Sorensen & Co
Original Assignee
Sorensen & Co
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 Sorensen & Co filed Critical Sorensen & Co
Application granted granted Critical
Publication of FR980197A publication Critical patent/FR980197A/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
    • H01J1/135—Circuit arrangements therefor, e.g. for temperature control
FR980197D 1948-02-07 1949-02-05 Improvements to protection devices against filament failure Expired FR980197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6866A US2621322A (en) 1948-02-07 1948-02-07 Filament failure device

Publications (1)

Publication Number Publication Date
FR980197A true FR980197A (en) 1951-05-09

Family

ID=21723002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR980197D Expired FR980197A (en) 1948-02-07 1949-02-05 Improvements to protection devices against filament failure

Country Status (2)

Country Link
US (1) US2621322A (en)
FR (1) FR980197A (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1528054A (en) * 1922-03-24 1925-03-03 Irving B Harris Rectifier
US1530687A (en) * 1923-08-07 1925-03-24 Murray Charles Double-filament vacuum tube
US1969955A (en) * 1929-05-08 1934-08-14 Adolph A Thomas Current controlling apparatus
US2200443A (en) * 1938-11-29 1940-05-14 Westinghouse Electric & Mfg Co Discharge lamp circuit
US2401096A (en) * 1943-09-18 1946-05-28 Radio Television Inst Inc Regulator circuit
US2414242A (en) * 1944-07-14 1947-01-14 Bell Telephone Labor Inc Voltage regulation
US2455143A (en) * 1946-04-17 1948-11-30 Helen S Sorensen Cathode controlled electronic voltage regulator circuit

Also Published As

Publication number Publication date
US2621322A (en) 1952-12-09

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