GB653096A - Improvements in or relating to circuit-arrangements for the transmission of electrical oscillations and allowing the passage of a broad band of frequencies - Google Patents

Improvements in or relating to circuit-arrangements for the transmission of electrical oscillations and allowing the passage of a broad band of frequencies

Info

Publication number
GB653096A
GB653096A GB16430/48A GB1643048A GB653096A GB 653096 A GB653096 A GB 653096A GB 16430/48 A GB16430/48 A GB 16430/48A GB 1643048 A GB1643048 A GB 1643048A GB 653096 A GB653096 A GB 653096A
Authority
GB
United Kingdom
Prior art keywords
transmission
frequencies
core
arrangements
relating
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
GB16430/48A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB653096A publication Critical patent/GB653096A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

653,096. Impedance networks. PHILIPS ELECTRICAL, Ltd. June 18, 1948, No. 16430. Convention date, June 21, 1947. [Class 40 (viii)] [Also in Group XL (c)] In circuits for the transmission of broad bands of very high frequencies and which include an inductance coil having a core of ferromagnetic material of substantially no electrical conductivity, the frequency of operation and the core material are chosen so that the permeability of the core shows a marked decrease with increasing frequency throughout the band of the system. In an example an aerial is formed of a rod of the material with a coupling coil around one end thereof. A suggested core material is a composition including ferrite known as ferroxcube.
GB16430/48A 1947-06-21 1948-06-18 Improvements in or relating to circuit-arrangements for the transmission of electrical oscillations and allowing the passage of a broad band of frequencies Expired GB653096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL653096X 1947-06-21

Publications (1)

Publication Number Publication Date
GB653096A true GB653096A (en) 1951-05-09

Family

ID=19795144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16430/48A Expired GB653096A (en) 1947-06-21 1948-06-18 Improvements in or relating to circuit-arrangements for the transmission of electrical oscillations and allowing the passage of a broad band of frequencies

Country Status (1)

Country Link
GB (1) GB653096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398567A2 (en) * 1989-05-16 1990-11-22 AT&T Corp. Method of operating AC magnetic devices with high efficiency at high frequency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398567A2 (en) * 1989-05-16 1990-11-22 AT&T Corp. Method of operating AC magnetic devices with high efficiency at high frequency
EP0398567A3 (en) * 1989-05-16 1992-12-30 AT&T Corp. Method of operating ac magnetic devices with high efficiency at high frequency

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