GB1347707A - Voltage variable capacitor tuning circuit - Google Patents

Voltage variable capacitor tuning circuit

Info

Publication number
GB1347707A
GB1347707A GB27171A GB27171A GB1347707A GB 1347707 A GB1347707 A GB 1347707A GB 27171 A GB27171 A GB 27171A GB 27171 A GB27171 A GB 27171A GB 1347707 A GB1347707 A GB 1347707A
Authority
GB
United Kingdom
Prior art keywords
tuning
voltage variable
circuit
tuning circuit
variable capacitor
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
GB27171A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1347707A publication Critical patent/GB1347707A/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
    • 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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Electronic Switches (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
GB27171A 1970-04-22 1971-04-19 Voltage variable capacitor tuning circuit Expired GB1347707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702019375 DE2019375C3 (de) 1970-04-22 1970-04-22 Anordnung zur Korrektur des Temperaturganges von Kapazitätsdiodenschaltungen, insbesondere bei Tastschaltungen für eine programmierte Frequenzwahl im Rundfunk- und Fernsehgeräten

Publications (1)

Publication Number Publication Date
GB1347707A true GB1347707A (en) 1974-02-27

Family

ID=5768805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27171A Expired GB1347707A (en) 1970-04-22 1971-04-19 Voltage variable capacitor tuning circuit

Country Status (7)

Country Link
AT (1) AT305395B (enExample)
BE (1) BE766091A (enExample)
DE (1) DE2019375C3 (enExample)
ES (1) ES390437A2 (enExample)
FR (1) FR2090569A5 (enExample)
GB (1) GB1347707A (enExample)
NL (1) NL175571C (enExample)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD66226A (enExample) *
US3011116A (en) * 1957-03-04 1961-11-28 Gen Dynamics Corp Temperature compensation in semiconductor devices
DE1538422B2 (de) * 1966-03-25 1975-03-27 Deutsche Itt Industries Gmbh, 7800 Freiburg Empfangsteil einer Fernbedienungseinrichtung
US3440544A (en) * 1966-11-01 1969-04-22 Motorola Inc Manual,automatic,and semiautomatic tuning circuits utilizing voltage variable capacitance diodes
GB1232202A (enExample) * 1967-08-14 1971-05-19

Also Published As

Publication number Publication date
BE766091A (fr) 1971-10-22
NL7105100A (enExample) 1971-10-26
DE2019375A1 (de) 1971-11-11
NL175571B (nl) 1984-06-18
FR2090569A5 (enExample) 1972-01-14
DE2019375C3 (de) 1981-04-16
DE2019375B2 (de) 1975-08-21
ES390437A2 (es) 1974-09-01
NL175571C (nl) 1984-11-16
AT305395B (de) 1973-02-26

Similar Documents

Publication Publication Date Title
US6437639B1 (en) Programmable RC filter
US3130377A (en) Semiconductor integrated circuit utilizing field-effect transistors
US4831431A (en) Capacitance stabilization
GB1405644A (en) Incrementally adjustable capacitor unit for tuning a crystal- controlled oscillator
US4352092A (en) Digital to analog converter
US3748499A (en) Voltage variable non-induction phase shifter with monolithic implementation
KR970077955A (ko) 모놀리식 집적 발진 회로를 구비한 디지탈 방식으로 조절가능한 수정 발진기
US3517352A (en) Voltage variable capacitance tuned circuit having diode means coupled to each terminal of the applied input tuning voltage
GB1026841A (en) Automatic control switchboard assembly
GB1347707A (en) Voltage variable capacitor tuning circuit
US3528043A (en) Voltage controllable tuning circuit which responds linearly in frequency with linear dial changes
EP0065219B1 (en) Signal voltage dividing circuit
US3074021A (en) Crystal discriminator
US3336536A (en) Signal generating apparatus with frequency controlled by gating circuit
US5300834A (en) Circuit with a voltage-controlled resistance
JPS5768055A (en) Semiconductor device
GB1357379A (en) Television receiver tuning system
GB1120592A (en) Improvements in or relating to tuned circuits employing transistors
GB1326843A (en) Receiver tuning arrangements
US4184125A (en) Analog tuning voltage circuit with analog signal multiplexing
KR850001674Y1 (ko) 텔레비젼의 튜너밴드 절환회로
KR840004843A (ko) 특성 절환 회로
KR850001675Y1 (ko) 텔레비젼의 튜너밴드 절환회로
SU412681A3 (enExample)
GB1225423A (enExample)

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee