ES2048156T3 - Circuito de control de ganancia. - Google Patents

Circuito de control de ganancia.

Info

Publication number
ES2048156T3
ES2048156T3 ES87202394T ES87202394T ES2048156T3 ES 2048156 T3 ES2048156 T3 ES 2048156T3 ES 87202394 T ES87202394 T ES 87202394T ES 87202394 T ES87202394 T ES 87202394T ES 2048156 T3 ES2048156 T3 ES 2048156T3
Authority
ES
Spain
Prior art keywords
control circuit
gain control
current
voltage divider
voltage
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 - Lifetime
Application number
ES87202394T
Other languages
English (en)
Inventor
Elve Desiderius Jozef Moons
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.)
Alcatel Lucent NV
Original Assignee
Alcatel 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
Priority claimed from BE2/61113A external-priority patent/BE905924R/nl
Application filed by Alcatel NV filed Critical Alcatel NV
Application granted granted Critical
Publication of ES2048156T3 publication Critical patent/ES2048156T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6025—Substation equipment, e.g. for use by subscribers including speech amplifiers implemented as integrated speech networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
  • Selective Calling Equipment (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Telephonic Communication Services (AREA)

Abstract

SE PRESENTA UN CIRCUITO DE CONTROL DE GANANCIA PARA UN DISPOSITIVO DE TELECOMUNICACION AL CUAL SE SUMINISTRA CORRIENTE CONTINUA DESDE UNA CENTRAL TELEFONICA. EL CIRCUITO DE CONTROL INCLUYE UN PRIMER DIVISOR DE VOLTAJE (R, R1/10) DEL CUAL UN NUMERO (R10, R10, 9, ...; R12) DE RESISTORES ESTAN CONECTADOS EN PARALELO CON TRANSISTORES NMOS (NM1/9) QUE TIENEN PUERTAS CONTROLADAS DESDE LOS PUNTOS DE DERIVACION (1/9) DE UN SEGUNDO DIVISOR DE VOLTAJE (R11/R19) ALIMENTADOS POR UNA CORRIENTE CONSTANTE 13 Y DESDE UN VOLTAJE (VP) QUE ES FUNCION DE LA CORRIENTE CONTINUA.
ES87202394T 1986-12-16 1987-12-02 Circuito de control de ganancia. Expired - Lifetime ES2048156T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2/61113A BE905924R (nl) 1986-12-16 1986-12-16 Telecommunicatie-inrichting en daarin gebruikte ketens.

Publications (1)

Publication Number Publication Date
ES2048156T3 true ES2048156T3 (es) 1994-03-16

Family

ID=3865844

Family Applications (1)

Application Number Title Priority Date Filing Date
ES87202394T Expired - Lifetime ES2048156T3 (es) 1986-12-16 1987-12-02 Circuito de control de ganancia.

Country Status (5)

Country Link
EP (1) EP0271947B1 (es)
AT (1) ATE92227T1 (es)
DE (1) DE3786764T2 (es)
DK (1) DK656887A (es)
ES (1) ES2048156T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124585A1 (de) * 1991-07-24 1993-01-28 Siemens Ag Steuerbare schaltungsanordnung
EP0851646A1 (fr) * 1996-12-31 1998-07-01 Koninklijke Philips Electronics N.V. Appareil téléphonique à compensation de pertes en ligne

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7205691A (es) * 1972-04-27 1973-05-25
US4301445A (en) * 1979-12-10 1981-11-17 General Electric Company Communication system and method having wide dynamic range digital gain control
GB2126046A (en) * 1982-08-25 1984-03-14 Philips Electronic Associated Telephone circuit
NL8203979A (nl) * 1982-10-15 1984-05-01 Philips Nv Inrichting voor het verzwakken van een analoog signaal.
GB2160038A (en) * 1984-05-30 1985-12-11 Stc Plc Gain control in integrated circuits

Also Published As

Publication number Publication date
DE3786764T2 (de) 1994-01-13
DK656887A (da) 1988-06-17
EP0271947A2 (en) 1988-06-22
EP0271947B1 (en) 1993-07-28
DK656887D0 (da) 1987-12-15
DE3786764D1 (de) 1993-09-02
ATE92227T1 (de) 1993-08-15
EP0271947A3 (en) 1989-08-30

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