GB1387316A - Tuneable circuit arrangements - Google Patents

Tuneable circuit arrangements

Info

Publication number
GB1387316A
GB1387316A GB1808972A GB1808972A GB1387316A GB 1387316 A GB1387316 A GB 1387316A GB 1808972 A GB1808972 A GB 1808972A GB 1808972 A GB1808972 A GB 1808972A GB 1387316 A GB1387316 A GB 1387316A
Authority
GB
United Kingdom
Prior art keywords
diode
tuning voltage
contact
tuning
transistor
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
GB1808972A
Other languages
English (en)
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1387316A publication Critical patent/GB1387316A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • 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
    • H03J5/0218—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values

Landscapes

  • Electronic Switches (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
GB1808972A 1971-04-21 1972-04-19 Tuneable circuit arrangements Expired GB1387316A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712119287 DE2119287B2 (de) 1971-04-21 1971-04-21 Elektronische Abstimmeinrichtung

Publications (1)

Publication Number Publication Date
GB1387316A true GB1387316A (en) 1975-03-12

Family

ID=5805327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1808972A Expired GB1387316A (en) 1971-04-21 1972-04-19 Tuneable circuit arrangements

Country Status (4)

Country Link
DE (1) DE2119287B2 (cs)
FR (1) FR2134041B1 (cs)
GB (1) GB1387316A (cs)
IT (1) IT953715B (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233071A (en) * 1989-06-12 1991-01-02 Grass Valley Group A rotary control knob for switching between two modes of movement control.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528044A (en) * 1968-06-19 1970-09-08 Standard Kollsman Ind Inc Touch controlled tv channel selector comprising a plurality of bistable switching circuits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233071A (en) * 1989-06-12 1991-01-02 Grass Valley Group A rotary control knob for switching between two modes of movement control.
GB2233071B (en) * 1989-06-12 1993-09-29 Grass Valley Group Automatic switching of motion control with tactile feedback

Also Published As

Publication number Publication date
DE2119287B2 (de) 1973-09-20
DE2119287A1 (de) 1972-11-02
IT953715B (it) 1973-08-10
FR2134041B1 (cs) 1979-04-13
FR2134041A1 (cs) 1972-12-01

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee