GB436428A - Improvements in or relating to high frequency inductance devices - Google Patents

Improvements in or relating to high frequency inductance devices

Info

Publication number
GB436428A
GB436428A GB5659/35A GB565935A GB436428A GB 436428 A GB436428 A GB 436428A GB 5659/35 A GB5659/35 A GB 5659/35A GB 565935 A GB565935 A GB 565935A GB 436428 A GB436428 A GB 436428A
Authority
GB
United Kingdom
Prior art keywords
airgap
parts
chicago
april
inductances
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
GB5659/35A
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.)
Johnson Laboratories Inc
Original Assignee
Johnson Laboratories Inc
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 Johnson Laboratories Inc filed Critical Johnson Laboratories Inc
Publication of GB436428A publication Critical patent/GB436428A/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)
  • Coils Or Transformers For Communication (AREA)

Abstract

436,428. Inductances. JOHNSON LABORATORIES, Inc., 609, West Lake Street, Chicago, U.S.A.-(Assignees of Polydoroff, W. J. ; 420, Fullerton Parkway, Chicago, U.S.A.) April 6, 1934, No. 5659/35. Convention date, April 22, 1933. Divided out of 434,675. [Class 37] A core of finely divided magnetic particles for highfrequency inductances comprises two parts made of compressed material separated by an airgap, the parts, comprising a cup - shaped shell and internal plug, being relatively adjusted to vary the airgap and then fixed in position. The parts 34, 39 are relatively rotatable and are fixed in position by a lock-nut 41, the airgap being formed at 52. The construction can be employed for matching the permeabilities of two core units working on the same frequency. Specifications 366,475, 403,368, 403,426, 405,623, and 434,675, are referred to.
GB5659/35A 1933-04-22 1934-04-06 Improvements in or relating to high frequency inductance devices Expired GB436428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US436428XA 1933-04-22 1933-04-22

Publications (1)

Publication Number Publication Date
GB436428A true GB436428A (en) 1935-10-07

Family

ID=21928154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5659/35A Expired GB436428A (en) 1933-04-22 1934-04-06 Improvements in or relating to high frequency inductance devices

Country Status (1)

Country Link
GB (1) GB436428A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475321A (en) * 1943-06-22 1949-07-05 Henry L Crowley Molded core
US2513161A (en) * 1946-07-30 1950-06-27 Rca Corp Core structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475321A (en) * 1943-06-22 1949-07-05 Henry L Crowley Molded core
US2513161A (en) * 1946-07-30 1950-06-27 Rca Corp Core structure

Similar Documents

Publication Publication Date Title
GB448598A (en) Improvements in toy or game apparatus
GB436428A (en) Improvements in or relating to high frequency inductance devices
GB616932A (en) Improvements in tuned circuits and inductances therefor
GB442673A (en) Improvements in and relating to variable self-induction devices
GB567030A (en) Improvements in and relating to insulated coils and methods of making same
GB527874A (en) Improvements in or relating to magnetic dust cores
GB445998A (en) Improvements in high frequency inductance devices
GB593939A (en) Magnetic work-holder
GB662909A (en) Improvements in or relating to high frequency inductance coils
GB439964A (en) Improvements in and relating to choke coils for electric circuits
GB441533A (en) Improvements in or relating to inductance devices
GB421263A (en) High frequency self-induction element
GB568682A (en) Improvements in and relating to moving coil electro-acoustic apparatus
GB412382A (en) Improvement in variable inductance devices
GB704597A (en) Magnetic separator
CA485151A (en) Inductance coil and magnetic core for use on high frequencies
GB641318A (en) Improvements in the manufacture of magnetisable cores
GB516080A (en) Improvements in or relating to high frequency coils of variable inductance
GB509869A (en) Improvements in high frequency inductance coils having adjustable magnetic cores
GB550577A (en) Improvements in or relating to powdered magnetic cores
GB451097A (en) Apparatus comprising a low permability core with an inductive winding thereon
GB510388A (en) Improvements in and relating to radio frequency inductance coils and the like
GB514363A (en) Improvements in and relating to electromagnetic induction apparatus and apparatus for making the same
GB580017A (en) Improvements in and relating to high frequency transformer arrangements
GB508957A (en) Improvements in or relating to metal diaphragms for acoustic devices