GB604095A - Improvements in or relating to variable inductances for use in oscillating circuits - Google Patents

Improvements in or relating to variable inductances for use in oscillating circuits

Info

Publication number
GB604095A
GB604095A GB31709/45A GB3170945A GB604095A GB 604095 A GB604095 A GB 604095A GB 31709/45 A GB31709/45 A GB 31709/45A GB 3170945 A GB3170945 A GB 3170945A GB 604095 A GB604095 A GB 604095A
Authority
GB
United Kingdom
Prior art keywords
inductance
inductances
circuit
high frequency
magnetic core
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
GB31709/45A
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.)
RENE EDOUARD GUILLEMANT
Original Assignee
RENE EDOUARD GUILLEMANT
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 RENE EDOUARD GUILLEMANT filed Critical RENE EDOUARD GUILLEMANT
Publication of GB604095A publication Critical patent/GB604095A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

604,095. Inductances. GUILLEMANT, R. E. Nov. 23, 1945, No. 31709. Convention date, Feb. 5, 1943. [Class 38 (ii)] A variable, high frequency, inductance with a movable magnetic core 4, comprises a coil divided into sections, each in a separate groove 2 of a former 1, the number of turns in each section being so selected as to give a predetermined relationship between displacement of the core and resonant frequency of the tuned circuit in which the inductance is connected. This relationship may be linear. The coils may be of enamel-covered stranded wire, and the grooves may be filled after winding with powdered magnetic material, some of this being removed as a factory adjustment in calibrating the inductance. The cores of two inductances in a superheterodyne receiver may be ganged for simultaneous movement, one inductance being in the high frequency circuit and the other in the heterodyne circuit. The latter may be in series with a similar smaller inductance, optionally with a magnetic core, and inductively coupled to an oscillation maintaining coil.
GB31709/45A 1943-02-05 1945-11-23 Improvements in or relating to variable inductances for use in oscillating circuits Expired GB604095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR604095X 1943-02-05

Publications (1)

Publication Number Publication Date
GB604095A true GB604095A (en) 1948-06-28

Family

ID=8973091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31709/45A Expired GB604095A (en) 1943-02-05 1945-11-23 Improvements in or relating to variable inductances for use in oscillating circuits

Country Status (2)

Country Link
US (1) US2594915A (en)
GB (1) GB604095A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117294A (en) * 1964-01-07 Bobbin with insulated lead-in means
US3013913A (en) * 1957-08-30 1961-12-19 Westinghouse Electric Corp Molded printed circuit
US3135922A (en) * 1958-08-26 1964-06-02 Standard Coil Prod Co Inc Television fm tuner converter
US3202906A (en) * 1959-05-25 1965-08-24 Maeda Hisao Electric circuit having distributed constants
US3173080A (en) * 1959-05-25 1965-03-09 Maeda Hisao Electric circuit having distributed constants
US3083930A (en) * 1959-08-13 1963-04-02 Honeywell Regulator Co Winding form
US3201729A (en) * 1960-02-26 1965-08-17 Blanchi Serge Electromagnetic device with potted coil
US3573694A (en) * 1969-10-28 1971-04-06 Gen Electric High voltage transformer for television receivers
US3644986A (en) * 1969-11-26 1972-02-29 Gen Electric Method of tuning high-voltage transformer for television receiver
NL7203795A (en) * 1972-03-22 1973-09-25
DE2543836C2 (en) * 1975-10-01 1983-06-09 Robert Bosch Gmbh, 7000 Stuttgart Ignition coils, in particular for ignition systems for internal combustion engines
GB1564966A (en) * 1976-11-27 1980-04-16 Lucas Industries Ltd Transformer
JPH063770B2 (en) * 1985-06-05 1994-01-12 株式会社村田製作所 Chip coil
US7019680B2 (en) * 2003-04-25 2006-03-28 Jackson Gregory P Hand-held, continuously variable, remote controller

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671106A (en) * 1923-04-28 1928-05-29 Cochrane Corp Flow meter
GB252285A (en) * 1925-03-04 1926-05-27 Roland John Tier Morton Improvements in and relating to the tuning of wireless circuits and apparatus therefor
US2340749A (en) * 1941-04-16 1944-02-01 Rca Corp Variable permeability tuning system
US2368857A (en) * 1943-06-24 1945-02-06 Johnson Lab Inc High-frequency inductance unit
US2394391A (en) * 1944-07-22 1946-02-05 Henry L Crowley Stable tuning device for high-frequency radio circuits

Also Published As

Publication number Publication date
US2594915A (en) 1952-04-29

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