ES391983A1 - Una disposicion de circuito de entrada para un sintonizador television. - Google Patents

Una disposicion de circuito de entrada para un sintonizador television.

Info

Publication number
ES391983A1
ES391983A1 ES391983A ES391983A ES391983A1 ES 391983 A1 ES391983 A1 ES 391983A1 ES 391983 A ES391983 A ES 391983A ES 391983 A ES391983 A ES 391983A ES 391983 A1 ES391983 A1 ES 391983A1
Authority
ES
Spain
Prior art keywords
television tuner
input circuit
attenuator
transistor
noise ratio
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
ES391983A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES391983A1 publication Critical patent/ES391983A1/es
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • H03G1/0058—PIN-diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3057—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver using at least one diode as controlling device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/008—Receiver or amplifier input circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
    • F23C2700/04—Combustion apparatus using gaseous fuel
    • F23C2700/043—Combustion apparatus using gaseous fuel for surface combustion

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Attenuators (AREA)
  • Networks Using Active Elements (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Television Receiver Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Amplifiers (AREA)
ES391983A 1970-06-06 1971-06-05 Una disposicion de circuito de entrada para un sintonizador television. Expired ES391983A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7008273.A NL156008B (nl) 1970-06-06 1970-06-06 Ingangsschakeling van een televisie-afstemeenheid.
FR7122882A FR2142693B1 (es) 1970-06-06 1971-06-23

Publications (1)

Publication Number Publication Date
ES391983A1 true ES391983A1 (es) 1973-06-16

Family

ID=26216473

Family Applications (1)

Application Number Title Priority Date Filing Date
ES391983A Expired ES391983A1 (es) 1970-06-06 1971-06-05 Una disposicion de circuito de entrada para un sintonizador television.

Country Status (6)

Country Link
US (1) US3813602A (es)
JP (1) JPS582505B1 (es)
ES (1) ES391983A1 (es)
FR (1) FR2142693B1 (es)
GB (1) GB1312418A (es)
NL (1) NL156008B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019160A (en) * 1975-12-05 1977-04-19 Gte Sylvania Incorporated Signal attenuator circuit for TV tuner
IT1057837B (it) * 1976-04-05 1982-03-30 Indesit Dispositivo per la sintonizzazione di un televisore
US4275362A (en) * 1979-03-16 1981-06-23 Rca Corporation Gain controlled amplifier using a pin diode
JPS6246332Y2 (es) * 1979-12-10 1987-12-14
DE3210452A1 (de) * 1982-03-22 1983-09-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Signal-eingangsschaltung
US4520507A (en) * 1983-10-24 1985-05-28 Zenith Electronics Corporation Low noise CATV converter
JPH05300043A (ja) * 1992-04-22 1993-11-12 Pioneer Electron Corp アッテネータ回路
EP0908007A2 (en) * 1997-03-26 1999-04-14 Koninklijke Philips Electronics N.V. Radio receiver and controllable amplifier circuit
US6310508B1 (en) * 2000-08-24 2001-10-30 Agilent Technologies, Inc. High frequency switch

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012138A (en) * 1959-06-17 1961-12-05 Gen Electric Audio amplifier
US3121198A (en) * 1960-08-24 1964-02-11 F V Topping Electronics Ltd A.c. signal polarizing circuit
US3153189A (en) * 1961-02-15 1964-10-13 Westinghouse Electric Corp Attenuation network automatically controlled by level of signal carrier
US3243719A (en) * 1963-08-06 1966-03-29 Auotmatic Electric Lab Inc A. g. c. circuit including a constant impedance variable-attenuation network utilizing current-sensitive impedances
US3325754A (en) * 1964-05-13 1967-06-13 Tektronix Inc Resistor-diode attenuator
US3518585A (en) * 1966-12-30 1970-06-30 Texas Instruments Inc Voltage controlled a.c. signal attenuator
US3581210A (en) * 1969-01-23 1971-05-25 Warren U Amfahr Rf t-pad low impedance coupling circuit attenuator with agc voltage control
US3613008A (en) * 1969-05-15 1971-10-12 Motorola Inc Overload compensation circuit for antenna tuning system
US3588894A (en) * 1969-08-20 1971-06-28 Us Navy Automatic gain control system for high-range-resolution radar
US3624561A (en) * 1970-02-24 1971-11-30 Ben H Tongue Broadband aperiodic attenuator apparatus
US3631333A (en) * 1970-05-06 1971-12-28 Honeywell Inc Electrically controlled attenuator

Also Published As

Publication number Publication date
NL7008273A (es) 1971-12-08
FR2142693B1 (es) 1977-06-03
DE2124377A1 (de) 1971-12-16
FR2142693A1 (es) 1973-02-02
NL156008B (nl) 1978-02-15
DE2124377B2 (de) 1976-12-02
US3813602A (en) 1974-05-28
JPS582505B1 (es) 1983-01-17
GB1312418A (en) 1973-04-04

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19870427