GB1094506A - Thin-film circuit-assembly - Google Patents

Thin-film circuit-assembly

Info

Publication number
GB1094506A
GB1094506A GB43214/65A GB4321465A GB1094506A GB 1094506 A GB1094506 A GB 1094506A GB 43214/65 A GB43214/65 A GB 43214/65A GB 4321465 A GB4321465 A GB 4321465A GB 1094506 A GB1094506 A GB 1094506A
Authority
GB
United Kingdom
Prior art keywords
winding
substrate
ferrite
film circuit
inductance
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
GB43214/65A
Inventor
Brian Astle
Eric Charles Snelling
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.)
Philips Components Ltd
Original Assignee
Mullard Ltd
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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB43214/65A priority Critical patent/GB1094506A/en
Publication of GB1094506A publication Critical patent/GB1094506A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10—Single-phase transformers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N97/00—Electric solid-state thin-film or thick-film devices, not otherwise provided for

Landscapes

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

Abstract

1,094,506. Inductors. MULLARD Ltd. Aug. 25, 1966 [Oct. 12, 1965], No. 43214/65. Heading H1T. A substrate F for a thin film circuit assembly is made of ferrite and is apertured, e.g. at S to provide a magnetic core for a multi-turn winding W. The inductance may be varied by movement (up or down) of a ferrite member E which may be separated from the substrate F by an insulating (silicon oxide) coating. The provision for varying inductance may be omitted or may comprise two overlapping substrate members each having a projection between slots running from its edge with the winding surrounding the two projections (Fig. 6, not shown). The winding is made of wire or strip and connected to conductors and other components formed by vapour deposition. The substrate may be of nickel-zinc cobalt ferrite and polished. The winding may be secured by encapsulation in a suitable resin.
GB43214/65A 1965-10-12 1965-10-12 Thin-film circuit-assembly Expired GB1094506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB43214/65A GB1094506A (en) 1965-10-12 1965-10-12 Thin-film circuit-assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43214/65A GB1094506A (en) 1965-10-12 1965-10-12 Thin-film circuit-assembly

Publications (1)

Publication Number Publication Date
GB1094506A true GB1094506A (en) 1967-12-13

Family

ID=10427772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43214/65A Expired GB1094506A (en) 1965-10-12 1965-10-12 Thin-film circuit-assembly

Country Status (1)

Country Link
GB (1) GB1094506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146847A (en) * 1983-09-19 1985-04-24 American Telephone & Telegraph Electrical inductance device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146847A (en) * 1983-09-19 1985-04-24 American Telephone & Telegraph Electrical inductance device

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