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GB681734A - Improvements in permeability tuning devices - Google Patents

Improvements in permeability tuning devices

Info

Publication number
GB681734A
GB681734A GB402050A GB402050A GB681734A GB 681734 A GB681734 A GB 681734A GB 402050 A GB402050 A GB 402050A GB 402050 A GB402050 A GB 402050A GB 681734 A GB681734 A GB 681734A
Authority
GB
United Kingdom
Prior art keywords
former
fixed
arms
feb
slot
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
GB402050A
Inventor
Patrick Richard James Court
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB402050A priority Critical patent/GB681734A/en
Publication of GB681734A publication Critical patent/GB681734A/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)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

681,734. Radio tuning apparatus. PYE, Ltd. Feb. 7, 1951 [Feb. 16, 1950], No. 4020/50. Class 40 (v). [Also in Group XXXV] A tuning device in which a magnetic core 13 is movable in a former 6 carrying a coil 7, comprises a pair of spaced parallel arms 2 and 3, one having an aperture 4 and the other a slot 5 for holding the former, the edges of the slot depressing or cutting into the former to hold it firmly between the two arms. As shown, a number of formers and coils may be provided, and the magnetic cores 13 are fixed to a metal slider 10 which may be fixed in position by a screw having a knurled knob 19. The arms 2 and 3 form part of a channel member 1 and a panel plate of metal and insulating material 14a, 14b may be fixed to the channel member. Specification 666,900 is referred to, regarding the use of the device in a television receiver.
GB402050A 1950-02-16 1950-02-16 Improvements in permeability tuning devices Expired GB681734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB402050A GB681734A (en) 1950-02-16 1950-02-16 Improvements in permeability tuning devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB402050A GB681734A (en) 1950-02-16 1950-02-16 Improvements in permeability tuning devices

Publications (1)

Publication Number Publication Date
GB681734A true GB681734A (en) 1952-10-29

Family

ID=9769223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB402050A Expired GB681734A (en) 1950-02-16 1950-02-16 Improvements in permeability tuning devices

Country Status (1)

Country Link
GB (1) GB681734A (en)

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