ES489321A1 - Perfeccionamientos en sintonizadores para receptores de te- levision. - Google Patents

Perfeccionamientos en sintonizadores para receptores de te- levision.

Info

Publication number
ES489321A1
ES489321A1 ES489321A ES489321A ES489321A1 ES 489321 A1 ES489321 A1 ES 489321A1 ES 489321 A ES489321 A ES 489321A ES 489321 A ES489321 A ES 489321A ES 489321 A1 ES489321 A1 ES 489321A1
Authority
ES
Spain
Prior art keywords
stage
output
tuner
input
filter
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
ES489321A
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke 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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of ES489321A1 publication Critical patent/ES489321A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Filters And Equalizers (AREA)
  • Noise Elimination (AREA)

Abstract

Perfeccionamientos en sintonizadores para receptores de televisión, que comprenden un circuito previo sintonizable, una etapa previa posconectada al circuito previo sintonizable, un filtro de banda sintonizable posconectado a la etapa previa y una etapa mezcladora posconectada al filtro de bando sintonizable, caracterizados porque entre el filtro de banda sintonizable, caracterizados porque entre el filtro de banda sintonizable y la etapa mezcladora se dispone una etapa separadora formada, por un transistor T2 o T5 que amplifica las señales de salida del filtro de banda sintonizable.
ES489321A 1979-03-09 1980-03-07 Perfeccionamientos en sintonizadores para receptores de te- levision. Expired ES489321A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2909319A DE2909319C2 (de) 1979-03-09 1979-03-09 Tuner

Publications (1)

Publication Number Publication Date
ES489321A1 true ES489321A1 (es) 1980-08-16

Family

ID=6064968

Family Applications (1)

Application Number Title Priority Date Filing Date
ES489321A Expired ES489321A1 (es) 1979-03-09 1980-03-07 Perfeccionamientos en sintonizadores para receptores de te- levision.

Country Status (6)

Country Link
JP (1) JPS55138930A (es)
DE (1) DE2909319C2 (es)
ES (1) ES489321A1 (es)
FR (1) FR2451133A1 (es)
IT (1) IT1129731B (es)
ZA (1) ZA801348B (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3106997A1 (de) * 1981-02-25 1982-09-09 Blaupunkt-Werke Gmbh, 3200 Hildesheim Tuner fuer fernsehempfangsgeraet
FI67980C (fi) * 1983-10-13 1985-06-10 Salora Oy Koppling foer ett foer mikrovaogsfrekvenser avstaembart filtersamt foerverkligande av densamma
US4662001A (en) * 1985-08-15 1987-04-28 Zenith Electronics Corporation Tunable notch filter for image frequency and conducted local oscillator leakage rejection
US4783849A (en) * 1986-11-26 1988-11-08 Rca Licensing Corporation FET tuner
US5428828A (en) * 1992-08-28 1995-06-27 Thomson Consumer Electronics, Inc. Television receiver tuning circuit
JPH0993091A (ja) * 1995-09-25 1997-04-04 Alps Electric Co Ltd テレビジョンチューナ入力同調回路
US5767726A (en) * 1996-10-21 1998-06-16 Lucent Technologies Inc. Four terminal RF mixer device
WO2006047294A1 (en) * 2004-10-22 2006-05-04 University Of Florida Research Foundation, Inc. Frequency tunable low noise amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171032B (de) * 1961-11-13 1964-05-27 Telefunken Patent Anordnung zur elektronischen Abstimmung und zur automatischen Scharfabstimmung
DE2701353A1 (de) * 1977-01-14 1978-08-10 Licentia Gmbh Mischstufe mit kapazitiver einkopplung der oszillatorfrequenz

Also Published As

Publication number Publication date
FR2451133A1 (fr) 1980-10-03
ZA801348B (en) 1981-06-24
DE2909319A1 (de) 1980-09-11
IT1129731B (it) 1986-06-11
FR2451133B3 (es) 1981-10-30
IT8020429A0 (it) 1980-03-07
DE2909319C2 (de) 1982-10-14
JPS55138930A (en) 1980-10-30

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