GB527874A - Improvements in or relating to magnetic dust cores - Google Patents

Improvements in or relating to magnetic dust cores

Info

Publication number
GB527874A
GB527874A GB1213039A GB1213039A GB527874A GB 527874 A GB527874 A GB 527874A GB 1213039 A GB1213039 A GB 1213039A GB 1213039 A GB1213039 A GB 1213039A GB 527874 A GB527874 A GB 527874A
Authority
GB
United Kingdom
Prior art keywords
magnetic
coefficient
core
relating
magnetic dust
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
GB1213039A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1213039A priority Critical patent/GB527874A/en
Publication of GB527874A publication Critical patent/GB527874A/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
    • H01F1/14—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 metals or alloys
    • H01F1/16—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 metals or alloys in the form of sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core

Landscapes

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

Abstract

527,874. Inductances. STANDARD TELEPHONES & CABLES, Ltd., and BUCKLEY, S. E. April 22, 1939, No. 12130. Addition to 483,919. [Class 38 (ii)] In a magnetic core comprising a number of elements 1 formed of compressed magnetic dust and separated by non- magnetic spacers formed by a shell 3, the latter is made of a material of such expansion . coefficient in relation to the temperature - permeability coefficient of the magnetic elements that the complete core has a predetermined temperature-permeability coefficient. Thus the latter may be made zero or even of such negative value as to compensate for the positive temperature coefficient of a condenser with which an inductive winding on the core 'is associated.
GB1213039A 1939-04-22 1939-04-22 Improvements in or relating to magnetic dust cores Expired GB527874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1213039A GB527874A (en) 1939-04-22 1939-04-22 Improvements in or relating to magnetic dust cores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1213039A GB527874A (en) 1939-04-22 1939-04-22 Improvements in or relating to magnetic dust cores

Publications (1)

Publication Number Publication Date
GB527874A true GB527874A (en) 1940-10-17

Family

ID=9998902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1213039A Expired GB527874A (en) 1939-04-22 1939-04-22 Improvements in or relating to magnetic dust cores

Country Status (1)

Country Link
GB (1) GB527874A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446999A (en) * 1945-11-07 1948-08-17 Gen Electric Magnetic core
US2488961A (en) * 1949-11-22 Method of making magnetic gores
CN113748471A (en) * 2020-01-11 2021-12-03 株式会社每德 Soft magnetic metal flat powder, resin composite sheet using same, and resin composite compound for molding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488961A (en) * 1949-11-22 Method of making magnetic gores
US2446999A (en) * 1945-11-07 1948-08-17 Gen Electric Magnetic core
CN113748471A (en) * 2020-01-11 2021-12-03 株式会社每德 Soft magnetic metal flat powder, resin composite sheet using same, and resin composite compound for molding

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