GB439147A - Improvements in and relating to self-inductance coils - Google Patents

Improvements in and relating to self-inductance coils

Info

Publication number
GB439147A
GB439147A GB7968/35A GB796835A GB439147A GB 439147 A GB439147 A GB 439147A GB 7968/35 A GB7968/35 A GB 7968/35A GB 796835 A GB796835 A GB 796835A GB 439147 A GB439147 A GB 439147A
Authority
GB
United Kingdom
Prior art keywords
turns
grooves
support
inductance
adjusted
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
GB7968/35A
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.)
IDEAL WERKE AG
Original Assignee
IDEAL WERKE AG
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 IDEAL WERKE AG filed Critical IDEAL WERKE AG
Publication of GB439147A publication Critical patent/GB439147A/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

Landscapes

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

Abstract

439,147. Inductances. IDEAL WERKE AKT. - GES. FUR DRAHTLOSE TELEPHONIE, 97, Grosse Leegestrasse, Hohensch÷nhausen, Berlin. March 14, 1935, No. 7968. Convention date, April 18, 1934. [Class 37] In an inductance coil in which the value of the inductance is adjusted by varying the distance between the turns or groups of turns 3 mounted on a common rigid support 2, one or more devices 5 are provided which are adjustable relatively to the support and engage each turn or group of turns separately. In the form shown, the device 5 comprises a rotatable member with inclined grooves 6 engaging the turns 3, the grooves being at different distances from one another so that when the turns are displaced they remain at equal distances from one another. The coil support 2, or a member 7 secured thereto, may also be provided with grooves 10 for the reception of the turns. The base 1 of the coil support may be combined with a trimming condenser 8 which is adjusted by a screw 9.
GB7968/35A 1934-04-18 1935-03-14 Improvements in and relating to self-inductance coils Expired GB439147A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE439147X 1934-04-18

Publications (1)

Publication Number Publication Date
GB439147A true GB439147A (en) 1935-11-29

Family

ID=6507264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7968/35A Expired GB439147A (en) 1934-04-18 1935-03-14 Improvements in and relating to self-inductance coils

Country Status (1)

Country Link
GB (1) GB439147A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588406A (en) * 1948-10-25 1952-03-11 Munson Ivan Keith Variable inductive coupler
US2641708A (en) * 1950-03-29 1953-06-09 Rca Corp Variable resonant structure
US2873373A (en) * 1953-04-29 1959-02-10 Aladdin Ind Inc Wide-range radio-frequency tuner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588406A (en) * 1948-10-25 1952-03-11 Munson Ivan Keith Variable inductive coupler
US2641708A (en) * 1950-03-29 1953-06-09 Rca Corp Variable resonant structure
US2873373A (en) * 1953-04-29 1959-02-10 Aladdin Ind Inc Wide-range radio-frequency tuner

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