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ES465807A1 - Circuito desfasador conmutable y ajustable para suministrar una onda sinusoidal. - Google Patents

Circuito desfasador conmutable y ajustable para suministrar una onda sinusoidal.

Info

Publication number
ES465807A1
ES465807A1 ES465807A ES465807A ES465807A1 ES 465807 A1 ES465807 A1 ES 465807A1 ES 465807 A ES465807 A ES 465807A ES 465807 A ES465807 A ES 465807A ES 465807 A1 ES465807 A1 ES 465807A1
Authority
ES
Spain
Prior art keywords
circuit
adjustable
emitter
output
phaseshifting
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
ES465807A
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of ES465807A1 publication Critical patent/ES465807A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/16—Networks for phase shifting
    • H03H11/20—Two-port phase shifters providing an adjustable phase shift
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Networks Using Active Elements (AREA)

Abstract

Circuito desfasador conmutable y ajustable para suministrar una onda sinosoidal aplicada en su entrada de señal con dos desfasadores diferentes según el nivel de una señal de mando aplicada en una entrada de mandoincluyendo dicho circuito: un paso desfasador simétrico que comprende un primer transistor amplificadorcuya base recibe dicha onda y cuyo colector y el emisor están unidosrespectivamentea dos bornes de una primera fuente de tensión continua de alimentación por dos resistencias de carga de igual valorestando unidoademásdicho emisor a la salida del circuito por medio de una resistencia ajustable y estando unidoademásdicho colector a dicha salida por medio de un diodo de capacidad variable en función de su tensión de polarización inversa (varicap); y un segundo transistor de conmutación mandado en su base por señales de mando de conmutación para estarbien en estado bloqueadobien en estado saturado.
ES465807A 1977-01-07 1978-01-05 Circuito desfasador conmutable y ajustable para suministrar una onda sinusoidal. Expired ES465807A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7700375A FR2377128A1 (fr) 1977-01-07 1977-01-07 Circuit dephaseur commutable et ajustable et recepteur de television comportant un tel circuit

Publications (1)

Publication Number Publication Date
ES465807A1 true ES465807A1 (es) 1978-09-16

Family

ID=9185242

Family Applications (1)

Application Number Title Priority Date Filing Date
ES465807A Expired ES465807A1 (es) 1977-01-07 1978-01-05 Circuito desfasador conmutable y ajustable para suministrar una onda sinusoidal.

Country Status (7)

Country Link
BE (1) BE862691A (es)
DE (1) DE2800203A1 (es)
EG (1) EG13398A (es)
ES (1) ES465807A1 (es)
FR (1) FR2377128A1 (es)
GB (1) GB1558054A (es)
IT (1) IT1101912B (es)

Also Published As

Publication number Publication date
FR2377128A1 (fr) 1978-08-04
BE862691A (fr) 1978-05-02
DE2800203A1 (de) 1978-07-13
GB1558054A (en) 1979-12-19
EG13398A (en) 1981-06-30
FR2377128B1 (es) 1982-06-04
IT1101912B (it) 1985-10-07
IT7847549A0 (it) 1978-01-06

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19991228