FR2417889A1 - Amplificateur avec montage en pont symetrique - Google Patents

Amplificateur avec montage en pont symetrique

Info

Publication number
FR2417889A1
FR2417889A1 FR7904360A FR7904360A FR2417889A1 FR 2417889 A1 FR2417889 A1 FR 2417889A1 FR 7904360 A FR7904360 A FR 7904360A FR 7904360 A FR7904360 A FR 7904360A FR 2417889 A1 FR2417889 A1 FR 2417889A1
Authority
FR
France
Prior art keywords
telephone
constant current
electroacoustic transducer
transistor bridge
bridge
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.)
Withdrawn
Application number
FR7904360A
Other languages
English (en)
French (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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of FR2417889A1 publication Critical patent/FR2417889A1/fr
Withdrawn legal-status Critical Current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
    • H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
FR7904360A 1978-02-21 1979-02-21 Amplificateur avec montage en pont symetrique Withdrawn FR2417889A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2807304A DE2807304C2 (de) 1978-02-21 1978-02-21 Schaltungsanordnung zum Verstärken eines in einer aus einer Teilnehmeranschlußleitung gespeisten Endstelle einer Fernmeldeanlage erzeugten Signals

Publications (1)

Publication Number Publication Date
FR2417889A1 true FR2417889A1 (fr) 1979-09-14

Family

ID=6032506

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7904360A Withdrawn FR2417889A1 (fr) 1978-02-21 1979-02-21 Amplificateur avec montage en pont symetrique

Country Status (7)

Country Link
AT (1) ATA131379A (xx)
AU (1) AU526550B2 (xx)
BE (1) BE874270A (xx)
DE (1) DE2807304C2 (xx)
FR (1) FR2417889A1 (xx)
IT (1) IT1111510B (xx)
NL (1) NL7901324A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512299A1 (fr) * 1981-08-26 1983-03-04 Ates Componenti Elettron Etage final en pont pour un amplificateur a basse frequence en reception

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417048B (sv) * 1979-05-04 1981-02-16 Ericsson Telefon Ab L M Balanserat forsterkarutgangssteg
IL63653A (en) * 1980-08-29 1984-05-31 Western Electric Co Line powered transformer-less loudspeaking telephone

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1136004A (en) * 1965-05-24 1968-12-11 Int Standard Electric Corp Signal translating circuit
GB1142824A (en) * 1967-06-21 1969-02-12 Mullard Ltd Amplifier circuits
DE1762319A1 (de) * 1968-05-24 1970-05-06 Telefunken Patent Transformatorloser Leistungsverstaerker in Brueckenschaltung,insbesondere fuer Tonfrequenzen
US3582802A (en) * 1969-07-16 1971-06-01 Beckman Instruments Inc Direct coupled differential transistor amplifier with improved common mode performance
US3742377A (en) * 1971-07-08 1973-06-26 Nat Semiconductor Corp Differential amplifier with means for balancing out offset terms
US3947778A (en) * 1974-09-11 1976-03-30 Motorola, Inc. Differential amplifier
US4071713A (en) * 1976-12-27 1978-01-31 Northern Telecom Limited Telephone speech network

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1136004A (en) * 1965-05-24 1968-12-11 Int Standard Electric Corp Signal translating circuit
GB1142824A (en) * 1967-06-21 1969-02-12 Mullard Ltd Amplifier circuits
DE1762319A1 (de) * 1968-05-24 1970-05-06 Telefunken Patent Transformatorloser Leistungsverstaerker in Brueckenschaltung,insbesondere fuer Tonfrequenzen
US3582802A (en) * 1969-07-16 1971-06-01 Beckman Instruments Inc Direct coupled differential transistor amplifier with improved common mode performance
US3742377A (en) * 1971-07-08 1973-06-26 Nat Semiconductor Corp Differential amplifier with means for balancing out offset terms
US3947778A (en) * 1974-09-11 1976-03-30 Motorola, Inc. Differential amplifier
US4071713A (en) * 1976-12-27 1978-01-31 Northern Telecom Limited Telephone speech network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512299A1 (fr) * 1981-08-26 1983-03-04 Ates Componenti Elettron Etage final en pont pour un amplificateur a basse frequence en reception

Also Published As

Publication number Publication date
BE874270A (fr) 1979-06-18
IT1111510B (it) 1986-01-13
DE2807304A1 (de) 1979-08-23
DE2807304C2 (de) 1982-07-01
IT7920311A0 (it) 1979-02-19
AU4439879A (en) 1979-08-30
ATA131379A (de) 1982-12-15
AU526550B2 (en) 1983-01-20
NL7901324A (nl) 1979-08-23

Similar Documents

Publication Publication Date Title
ES2063123T3 (es) Metodo y aparato para la transmision de banda ancha de señales digitales entre, por ejemplo, una central telefonica y domicilios de abonados.
SE8001848L (sv) Hjelpmedel for att bota eller minska stamning
FR2417889A1 (fr) Amplificateur avec montage en pont symetrique
PT83829A (fr) Fontaine d:energie pour telephone
SE7713728L (sv) Anordning for elektronisk strommatning till abonnentapparater
SE8205342L (sv) Metod och anordning vid strommatning av en abonnentapparat fran en telefonvexel
JPS52139302A (en) Automatic circuit switching unit
FR2372545A1 (fr) Amplificateur a transistor a effet de champ
TW431067B (en) Single source differential circuit
SE7902832L (sv) Abonnentanslutningskrets innefattande en symmetrisk effektforsterkare for matning av en abonnentledning
ES476608A1 (es) Un amplificador puente bidireccional.
ES464223A1 (es) Equipo para linea telefonica.
EP0346020A3 (en) Drive amplifier circuit
ATE5124T1 (de) Kniegelenkbandage.
ES426575A1 (es) Perfeccionamientos introducidos en un circuito de adapta- cion de linea para uso en un aparato telefonico de abonado con marcacion de numero por pulsadores de tono.
ATE4T1 (de) Schaltungsanordnung zur erdfreien uebertragung von signalen ueber trennstellen in fernmeldeanlagen
FR2442557A1 (fr) Pont d'alimentation electronique pour ligne telephonique
GB1531692A (en) Telecommunication substation
FR2423918A1 (fr) Amplificateur
JPS5360522A (en) Voice answering system
SE8006004L (sv) Elektronisk telefonkrets
JPS548861A (en) Constant voltage circuit
JPS53138261A (en) Integrated circuit device
JPS56114439A (en) Invertor circuit
JPS57164647A (en) Parallel operation for telephone device on digital loop

Legal Events

Date Code Title Description
RE Withdrawal of published application