GB563377A - Improvements in tuning devices for radio-circuits - Google Patents

Improvements in tuning devices for radio-circuits

Info

Publication number
GB563377A
GB563377A GB33843A GB33843A GB563377A GB 563377 A GB563377 A GB 563377A GB 33843 A GB33843 A GB 33843A GB 33843 A GB33843 A GB 33843A GB 563377 A GB563377 A GB 563377A
Authority
GB
United Kingdom
Prior art keywords
vanes
stator
sets
spindle
condenser
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
GB33843A
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.)
Marconi Instruments Ltd
Original Assignee
Marconi Instruments 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 Marconi Instruments Ltd filed Critical Marconi Instruments Ltd
Priority to GB33843A priority Critical patent/GB563377A/en
Publication of GB563377A publication Critical patent/GB563377A/en
Priority to FR945191D priority patent/FR945191A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components
    • H03H5/02—One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

563,377. Wireless receiving apparatus. MARCONI INSTRUMENTS, Ltd., and GARTHWAITE, E. Jan. 7, 1943, No. 338. [Class 40 (v)] A tuning and range changing device includes a plurality of sets of condenser stator vanes arranged radially about a spindle, a plurality of inductances associated with each set of stator vanes, a set of condenser rotor vanes mounted on the spindle, a set of further condenser vanes, and means for moving the stator vanes relatively to the further vanes for associating any one of the sets of stator vanes with the further vanes, and means for variably associating the set of rotor vanes with the associated set of stator vanes. As shown, there are four sets of stator vanes a, b, c, d, each set being divided into two groups E, F, the members of each group being connected together and the groups of each set being connected by a corresponding inductance such as Ha, Hb, Hd. By rotating the stator assembly, any selected set of stator plates, such as d, can be brought into capacitative relation with two sets of fixed vanes H, L so as to determine which inductance (in this case Hd) is capacitatively coupled between the anode and grid of a valve V. Two pairs of rotor vanes I, J, connected together by a spindle G have a variable capacitative connection with the selected set of stator plates d. Thus, wave range switching is done by rotating the stator plates into one of its four positions, and tuning within the range is done by turning spindle G.
GB33843A 1943-01-07 1943-01-07 Improvements in tuning devices for radio-circuits Expired GB563377A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB33843A GB563377A (en) 1943-01-07 1943-01-07 Improvements in tuning devices for radio-circuits
FR945191D FR945191A (en) 1943-01-07 1947-04-15 Improvements to tuning devices for radio circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33843A GB563377A (en) 1943-01-07 1943-01-07 Improvements in tuning devices for radio-circuits

Publications (1)

Publication Number Publication Date
GB563377A true GB563377A (en) 1944-08-11

Family

ID=9702635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33843A Expired GB563377A (en) 1943-01-07 1943-01-07 Improvements in tuning devices for radio-circuits

Country Status (2)

Country Link
FR (1) FR945191A (en)
GB (1) GB563377A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE944201C (en) * 1951-06-01 1956-06-07 Blaupunkt Werke G M B H Zweign Waveband switch for high frequencies
US2773988A (en) * 1952-11-26 1956-12-11 Standard Coil Prod Co Inc Frequency selector

Also Published As

Publication number Publication date
FR945191A (en) 1949-04-27

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