GB554724A - Improvements in or relating to inductance coils - Google Patents

Improvements in or relating to inductance coils

Info

Publication number
GB554724A
GB554724A GB45842A GB45842A GB554724A GB 554724 A GB554724 A GB 554724A GB 45842 A GB45842 A GB 45842A GB 45842 A GB45842 A GB 45842A GB 554724 A GB554724 A GB 554724A
Authority
GB
United Kingdom
Prior art keywords
inductance
relating
coil
core
philips
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
GB45842A
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
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 filed Critical Philips Gloeilampenfabrieken NV
Priority to GB45842A priority Critical patent/GB554724A/en
Publication of GB554724A publication Critical patent/GB554724A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
    • H01F21/065—Measures for obtaining a desired relation between the position of the core and the inductance

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

554,724. Inductances. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Jan. 12, 1942, No. 458. [Class 38 (ii)] An inductance coil 2 having a slidable magnetic core 6 for tuning, for example, the high frequency circuits of superheterodyne radio receivers, is provided with a non-magnetic conducting body 3 or ring 5 adjustably mounted at one or both ends of the coil so as to be loosely coupled with the winding 2 when the core is completely withdrawn, thus permitting the law of variation of the inductance to be adjusted during manufacture for tracking purposes.
GB45842A 1942-01-12 1942-01-12 Improvements in or relating to inductance coils Expired GB554724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB45842A GB554724A (en) 1942-01-12 1942-01-12 Improvements in or relating to inductance coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB45842A GB554724A (en) 1942-01-12 1942-01-12 Improvements in or relating to inductance coils

Publications (1)

Publication Number Publication Date
GB554724A true GB554724A (en) 1943-07-16

Family

ID=9704697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45842A Expired GB554724A (en) 1942-01-12 1942-01-12 Improvements in or relating to inductance coils

Country Status (1)

Country Link
GB (1) GB554724A (en)

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