FR2182932B1 - - Google Patents

Info

Publication number
FR2182932B1
FR2182932B1 FR7312131A FR7312131A FR2182932B1 FR 2182932 B1 FR2182932 B1 FR 2182932B1 FR 7312131 A FR7312131 A FR 7312131A FR 7312131 A FR7312131 A FR 7312131A FR 2182932 B1 FR2182932 B1 FR 2182932B1
Authority
FR
France
Prior art keywords
differential amplifier
circuit
tuning
stage
voltages
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
FR7312131A
Other languages
English (en)
Other versions
FR2182932A1 (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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta 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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of FR2182932A1 publication Critical patent/FR2182932A1/fr
Application granted granted Critical
Publication of FR2182932B1 publication Critical patent/FR2182932B1/fr
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
    • H03J5/0218—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
    • 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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Amplifiers (AREA)
FR7312131A 1972-05-04 1973-04-04 Expired FR2182932B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2221773A DE2221773C2 (de) 1972-05-04 1972-05-04 Schaltung zum Anschalten gespeicherter konstanter elektrischer Abstinunspanniingen für die Festsenderwahl in Geraten der Nachrichtentechnik

Publications (2)

Publication Number Publication Date
FR2182932A1 FR2182932A1 (fr) 1973-12-14
FR2182932B1 true FR2182932B1 (fr) 1976-11-12

Family

ID=5844002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7312131A Expired FR2182932B1 (fr) 1972-05-04 1973-04-04

Country Status (5)

Country Link
US (1) US3914700A (fr)
JP (1) JPS5321801B2 (fr)
DE (1) DE2221773C2 (fr)
FR (1) FR2182932B1 (fr)
GB (1) GB1398356A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090124A (en) * 1972-09-09 1978-05-16 U.S. Philips Corporation Circuit arrangement for switching a tuning voltage with low switch offset voltages and temperature compensation
DE2608266C3 (de) * 1976-02-28 1980-09-18 Deutsche Itt Industries Gmbh, 7800 Freiburg Schaltungsanordnung zum Ableiten einer kontinuierlich veränderbaren Gleichspannung aus der konstanten Gleichspannung einer Gleichspannungsquelle
CA1173176A (fr) * 1979-06-04 1984-08-21 Isao Fujimoto Bloc de syntonisation
US4591740A (en) * 1983-02-28 1986-05-27 Burr-Brown Corporation Multiple input port circuit having temperature zero voltage offset bias means
GB2163312B (en) * 1984-08-14 1988-01-27 Stc Plc Amplifier

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL196304A (fr) * 1954-04-06
DE1218554B (de) * 1964-12-19 1966-06-08 Telefunken Patent Verfahren und Anordnung zur Einstellung und Konstanthaltung der Frequenz eines Oszillators
GB1281061A (en) * 1968-08-30 1972-07-12 Matsushita Electric Ind Co Ltd Channel selector and tuner combination
US3528043A (en) * 1968-12-17 1970-09-08 Servo Corp Of America Voltage controllable tuning circuit which responds linearly in frequency with linear dial changes
US3617916A (en) * 1969-07-24 1971-11-02 Beckman Instruments Inc Commutated buffer amplifier
US3593044A (en) * 1969-08-26 1971-07-13 Int Standard Electric Corp Bit synchronization arrangement for pcm systems
US3588752A (en) * 1969-08-28 1971-06-28 Sylvania Electric Prod Tracking filter
GB1300392A (en) * 1969-10-24 1972-12-20 Marconi Instruments Ltd Improvements in or relating to adjustable frequency generator equipments and adaptors therefor
US3617855A (en) * 1970-04-24 1971-11-02 Nippon Oceanics Inst Ltd Phase-detecting circuits
GB1357379A (en) * 1970-06-25 1974-06-19 Matsushita Electric Ind Co Ltd Television receiver tuning system
US3699455A (en) * 1971-01-20 1972-10-17 Gte Sylvania Inc Automatic frequency control circuitry for a varactor tuner system

Also Published As

Publication number Publication date
GB1398356A (en) 1975-06-18
US3914700A (en) 1975-10-21
JPS4956502A (fr) 1974-06-01
DE2221773B1 (de) 1973-08-30
JPS5321801B2 (fr) 1978-07-05
USB351863I5 (fr) 1975-01-28
FR2182932A1 (fr) 1973-12-14
DE2221773C2 (de) 1979-04-05

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse