NL67449C - - Google Patents

Info

Publication number
NL67449C
NL67449C NL67449DA NL67449C NL 67449 C NL67449 C NL 67449C NL 67449D A NL67449D A NL 67449DA NL 67449 C NL67449 C NL 67449C
Authority
NL
Netherlands
Application number
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.)
Publication date
Application granted granted Critical
Publication of NL67449C publication Critical patent/NL67449C/xx

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H03F1/544—Protection of filaments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplifiers (AREA)
NL67449D 1947-11-28 NL67449C (en)van)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US788380A US2488948A (en) 1947-11-28 1947-11-28 Repeatered transmission system, including multifilament amplifiers

Publications (1)

Publication Number Publication Date
NL67449C true NL67449C (en)van) 1900-01-01

Family

ID=25144314

Family Applications (2)

Application Number Title Priority Date Filing Date
NL67449D NL67449C (en)van) 1947-11-28
NL696909930A NL142201B (nl) 1947-11-28 Werkwijze voor het kleuren van een anodisch geoxydeerd aluminium werkstuk, alsmede aldus gekleurd, anodisch geoxydeerd werkstuk.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL696909930A NL142201B (nl) 1947-11-28 Werkwijze voor het kleuren van een anodisch geoxydeerd aluminium werkstuk, alsmede aldus gekleurd, anodisch geoxydeerd werkstuk.

Country Status (3)

Country Link
US (1) US2488948A (en)van)
FR (1) FR968922A (en)van)
NL (2) NL142201B (en)van)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843803A (en) * 1956-03-29 1958-07-15 Rca Corp Vacuum tube input circuit
US2936385A (en) * 1958-04-25 1960-05-10 Western Electric Co Heater insulator for indirectly heated cathode
US3105125A (en) * 1959-10-30 1963-09-24 Bell Telephone Labor Inc Power separation filter
US3119931A (en) * 1960-06-28 1964-01-28 Philips Corp Circuit means for coupling an x-ray device to a control supply apparatus
NL275209A (en)van) * 1961-02-24

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190812398A (en) * 1908-06-09 1909-06-03 William Dierman Improvements in or relating to Installations of Electric Lamps having Metal Filaments
NL7572C (en)van) * 1919-09-03
US1833968A (en) * 1925-11-19 1931-12-01 American Telephone & Telegraph Amplifying system
US1699011A (en) * 1925-12-07 1929-01-15 Murphy Edmund Guyer Vacuum tube
BE369493A (en)van) * 1927-11-10
US1940181A (en) * 1928-09-18 1933-12-19 American Telephone & Telegraph Vacuum tube circuits
US2020875A (en) * 1931-12-31 1935-11-12 Bell Telephone Labor Inc Energization and control of amplifiers
US2020318A (en) * 1934-03-06 1935-11-12 Bell Telephone Labor Inc System including repeater

Also Published As

Publication number Publication date
NL142201B (nl)
US2488948A (en) 1949-11-22
FR968922A (fr) 1950-12-08

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