GB425481A - Improvements in or relating to variable inductances and variably tunable circuits incorporating the same - Google Patents

Improvements in or relating to variable inductances and variably tunable circuits incorporating the same

Info

Publication number
GB425481A
GB425481A GB25492/33A GB2549233A GB425481A GB 425481 A GB425481 A GB 425481A GB 25492/33 A GB25492/33 A GB 25492/33A GB 2549233 A GB2549233 A GB 2549233A GB 425481 A GB425481 A GB 425481A
Authority
GB
United Kingdom
Prior art keywords
limbs
core
coils
relating
closing piece
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
GB25492/33A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB425481A publication Critical patent/GB425481A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

425,481. Inductances. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Sept. 14, 1933, No. 25492. Convention date, Sept. 14, 1932. [Class 37] A variable inductance for tuning at radio frequencies comprises a coil or coils having a core containing magnetic material, the core having a number of limbs connected by a yoke, for example, a U-shape core, one of the limbs being inserted in a coil and cooperating with a closing piece adjustable relatively to the limbs, the closing piece in one extreme position closing the gap between the ends of the limbs and forming a substantially complete circuit of magnetic material. One or more coils f are carried by the closing piece e and the U-shape core part d is moved relatively to the part e. Figure - of - eight coils may be wound on the core members.
GB25492/33A 1932-09-14 1933-09-14 Improvements in or relating to variable inductances and variably tunable circuits incorporating the same Expired GB425481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE425481X 1932-09-14

Publications (1)

Publication Number Publication Date
GB425481A true GB425481A (en) 1935-03-14

Family

ID=6477067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25492/33A Expired GB425481A (en) 1932-09-14 1933-09-14 Improvements in or relating to variable inductances and variably tunable circuits incorporating the same

Country Status (1)

Country Link
GB (1) GB425481A (en)

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