GB470945A - Improved tuning arrangements for oscillatory electric circuits - Google Patents

Improved tuning arrangements for oscillatory electric circuits

Info

Publication number
GB470945A
GB470945A GB23733/36A GB2373336A GB470945A GB 470945 A GB470945 A GB 470945A GB 23733/36 A GB23733/36 A GB 23733/36A GB 2373336 A GB2373336 A GB 2373336A GB 470945 A GB470945 A GB 470945A
Authority
GB
United Kingdom
Prior art keywords
inductances
polepieces
aug
core
xxxvi
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
GB23733/36A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB470945A publication Critical patent/GB470945A/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
    • H01F21/00—Variable inductances or transformers of the signal type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

470,945. Inductances. KRAMOLIN, L. L. DE. Aug. 29,1936, Nos. 23733 and 23734. Convention dates, Aug. 29, 1935 and Nov. 8, 1935. [Class 38 (ii)] [Also in Groups XL and XXXVI] Constructions of polarizing magnets are described for the variable inductances used in the method of tuning a radio receiver described in Specifications 449,240 ; 451,097, [Group XXXVI], and 451,098, [Group XL]. In one embodiment, Fig. 3, the cores 15, 16 of two inductances are located between two pairs of polepieces of a common magnet, auxiliary windings 13a and/or 14a being provided to enable the inductances to be matched. The currents through the main and auxiliary windings may aid or oppose each other and the magnet may be permanently magnetized. Relatively pointed polepieces are used, the bearing surface being about the same width as the shanks of the core of the controlled inductance. Another form of polepiece is shown in Fig. 5. In another embodiment, Fig. 8, the inductance 15 is arranged in a cylindrical copper screen 29 between the internally projecting polepieces of a boxshaped core and surrounded by the magnetizing winding 14.
GB23733/36A 1935-08-29 1936-08-29 Improved tuning arrangements for oscillatory electric circuits Expired GB470945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE470945X 1935-08-29

Publications (1)

Publication Number Publication Date
GB470945A true GB470945A (en) 1937-08-25

Family

ID=6541205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23733/36A Expired GB470945A (en) 1935-08-29 1936-08-29 Improved tuning arrangements for oscillatory electric circuits

Country Status (2)

Country Link
FR (1) FR812417A (en)
GB (1) GB470945A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1200899B (en) * 1959-06-20 1965-09-16 Commissariat Energie Atomique Magnetic variometer
DE1277954B (en) * 1962-02-03 1968-09-19 Standard Elektrik Lorenz Ag Circuit arrangement for the electronic coordination of several oscillation circuits in synchronism or parallel operation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741117C (en) * 1939-04-16 1943-11-04 Siemens Ag Device for balancing the characteristic of an inductance which can be changed by an electromagnetic constant field excitation system and has a ferromagnetic, in particular high-frequency iron core
DE1033282B (en) * 1953-11-27 1958-07-03 Lorenz C Ag Tuning arrangement with voltage-controlled reactive resistors arranged in oscillation circuits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1200899B (en) * 1959-06-20 1965-09-16 Commissariat Energie Atomique Magnetic variometer
DE1277954B (en) * 1962-02-03 1968-09-19 Standard Elektrik Lorenz Ag Circuit arrangement for the electronic coordination of several oscillation circuits in synchronism or parallel operation
DE1277954C2 (en) * 1962-02-03 1973-02-22 Standard Elek K Lorenz Ag Circuit arrangement for the electronic coordination of several oscillation circuits in synchronism or parallel operation

Also Published As

Publication number Publication date
FR812417A (en) 1937-05-10

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