GB870475A - Improvements in or relating to variable inductor arrangements - Google Patents

Improvements in or relating to variable inductor arrangements

Info

Publication number
GB870475A
GB870475A GB42439/59A GB4243959A GB870475A GB 870475 A GB870475 A GB 870475A GB 42439/59 A GB42439/59 A GB 42439/59A GB 4243959 A GB4243959 A GB 4243959A GB 870475 A GB870475 A GB 870475A
Authority
GB
United Kingdom
Prior art keywords
core
screw
tube
threaded
dec
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
GB42439/59A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB870475A publication Critical patent/GB870475A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01F17/043—Fixed inductances of the signal type  with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

870,475. Inductors. TELEFONAKTIEBOLAGET L. M. ERICSSON. Dec. 14, 1959 [Dec. 19, 1958], No. 42439/59. Class 38 (2). A variable inductor includes an insulating supporting plate 4 of ceramic material, having an internally threaded insulating tube 5 extending from its centre through a divided shell-type ferrite core 1 with a coil 2 in a recess. The core halves are glued together, and to supporting plate 4. A ferrite trimming core 8 is provided, mounted on a carrier 7 of nylon, threaded to screw into tube 5. A small part of the head of screw 7 may be conically threaded, or unthreaded. The top of screw 7 is grooved and the walls of the top part of groove 10 are made divergent to form tongues 11 which bear resiliently against the wall of tube 5 to retain the trimming core in position. A clamp 3 holds the assembly together while the glue sets, and terminals 6 may be used to secure the inductor to a base plate.
GB42439/59A 1958-12-19 1959-12-14 Improvements in or relating to variable inductor arrangements Expired GB870475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE870475X 1958-12-19

Publications (1)

Publication Number Publication Date
GB870475A true GB870475A (en) 1961-06-14

Family

ID=20370436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42439/59A Expired GB870475A (en) 1958-12-19 1959-12-14 Improvements in or relating to variable inductor arrangements

Country Status (1)

Country Link
GB (1) GB870475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944958A (en) * 1973-06-18 1976-03-16 U.S. Philips Corporation Adjusting pin for a ferro-magnetic core

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944958A (en) * 1973-06-18 1976-03-16 U.S. Philips Corporation Adjusting pin for a ferro-magnetic core

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