FR786037A - Improvements to automatic devices for tuning radio receivers - Google Patents

Improvements to automatic devices for tuning radio receivers

Info

Publication number
FR786037A
FR786037A FR786037DA FR786037A FR 786037 A FR786037 A FR 786037A FR 786037D A FR786037D A FR 786037DA FR 786037 A FR786037 A FR 786037A
Authority
FR
France
Prior art keywords
radio receivers
automatic devices
tuning radio
tuning
automatic
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
Other languages
French (fr)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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
Priority claimed from GB605534A external-priority patent/GB437442A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR786037A publication Critical patent/FR786037A/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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H03J5/08—Settings determined by a number of separately-actuated positioning means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/18—Control by auxiliary power
    • H03J1/187—Control by auxiliary power the auxiliary power balancing automatically a Wheatstone bridge or the like, that has been unbalanced by the controlling device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/042—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant with reactance tube
FR786037D 1934-02-24 1935-02-22 Improvements to automatic devices for tuning radio receivers Expired FR786037A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB605534A GB437442A (en) 1935-01-30 1934-02-24 Improvements in automatic tuning devices for radio receivers
GB309935A GB451223A (en) 1935-01-30 1935-01-30 Improvements in and relating to wireless and like receivers, and tuning control apparatus for use therewith

Publications (1)

Publication Number Publication Date
FR786037A true FR786037A (en) 1935-08-24

Family

ID=32071215

Family Applications (2)

Application Number Title Priority Date Filing Date
FR786037D Expired FR786037A (en) 1934-02-24 1935-02-22 Improvements to automatic devices for tuning radio receivers
FR801426D Expired FR801426A (en) 1934-02-24 1936-01-30 Improvements to t receptor devices. s. f., or the like and to the tuning control devices used with them

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR801426D Expired FR801426A (en) 1934-02-24 1936-01-30 Improvements to t receptor devices. s. f., or the like and to the tuning control devices used with them

Country Status (2)

Country Link
US (2) US2231386A (en)
FR (2) FR786037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161962B (en) * 1956-08-21 1964-01-30 Pierre Gaudillere Device for eliminating errors when determining the location of a receiver as the intersection of two base lines by means of rhythmically moving interference fringes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495020A (en) * 1944-04-19 1950-01-17 Colonial Radio Corp Selector for signal seeking tuning systems
US2513786A (en) * 1945-02-14 1950-07-04 Rca Corp Receiver system
US2506869A (en) * 1946-06-07 1950-05-09 Colonial Radio Corp Signal-seeking receiver
US2533662A (en) * 1947-04-11 1950-12-12 Automatic Elect Lab Automatic trunk selecting system for radio telephone stations
US2904676A (en) * 1950-11-13 1959-09-15 Gen Motors Corp Control circuit for signal seeking tuner
US2794920A (en) * 1953-06-23 1957-06-04 Philips Corp Oscillator tuning arrangement
US2863059A (en) * 1953-07-13 1958-12-02 Gen Motors Corp Tuning control for radio

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1161962B (en) * 1956-08-21 1964-01-30 Pierre Gaudillere Device for eliminating errors when determining the location of a receiver as the intersection of two base lines by means of rhythmically moving interference fringes

Also Published As

Publication number Publication date
FR801426A (en) 1936-08-04
US2231386A (en) 1941-02-11
US2218905A (en) 1940-10-22

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