GB555732A - Improvements in or relating to variable permeability tuning systems for electric circuits - Google Patents

Improvements in or relating to variable permeability tuning systems for electric circuits

Info

Publication number
GB555732A
GB555732A GB2687/42A GB268742A GB555732A GB 555732 A GB555732 A GB 555732A GB 2687/42 A GB2687/42 A GB 2687/42A GB 268742 A GB268742 A GB 268742A GB 555732 A GB555732 A GB 555732A
Authority
GB
United Kingdom
Prior art keywords
relating
electric circuits
inductance
iron
march
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
GB2687/42A
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.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph Co 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB555732A publication Critical patent/GB555732A/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

Abstract

555,732. Inductances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 2, 1942, No. 2687. Convention date, March 1, 1941. [Class 38 (ii)] A tuning inductance 7 varied by a movable core 10 is provided with magnetic members 31, 32 in the form of rings or cups at one or both ends for extending its range by increasing the maximum inductance without materially altering the minimum inductance. The magnetic members may be adjustable in an axial direction. The core 10 is preferably made of finely divided iron of the type described in the Journal of the A.I.E.E., Vol. 40, July, 1921, while the members 31, 32 may be of the same material or of less expensive iron such as Swedish or sponge iron. Specifications 471,788 and 479,880 are referred to.
GB2687/42A 1941-03-01 1942-03-02 Improvements in or relating to variable permeability tuning systems for electric circuits Expired GB555732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US555732XA 1941-03-01 1941-03-01

Publications (1)

Publication Number Publication Date
GB555732A true GB555732A (en) 1943-09-06

Family

ID=21998751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2687/42A Expired GB555732A (en) 1941-03-01 1942-03-02 Improvements in or relating to variable permeability tuning systems for electric circuits

Country Status (1)

Country Link
GB (1) GB555732A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357434A (en) * 1964-04-06 1967-12-12 Avco Corp Inductively linked receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357434A (en) * 1964-04-06 1967-12-12 Avco Corp Inductively linked receiver

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