FR2418572A1 - Etage-amplificateur de sortie audio - Google Patents

Etage-amplificateur de sortie audio

Info

Publication number
FR2418572A1
FR2418572A1 FR7905060A FR7905060A FR2418572A1 FR 2418572 A1 FR2418572 A1 FR 2418572A1 FR 7905060 A FR7905060 A FR 7905060A FR 7905060 A FR7905060 A FR 7905060A FR 2418572 A1 FR2418572 A1 FR 2418572A1
Authority
FR
France
Prior art keywords
amplifier stage
output amplifier
audio output
gives
input signal
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.)
Granted
Application number
FR7905060A
Other languages
English (en)
Other versions
FR2418572B1 (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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of FR2418572A1 publication Critical patent/FR2418572A1/fr
Application granted granted Critical
Publication of FR2418572B1 publication Critical patent/FR2418572B1/fr
Granted 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
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3066—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output
    • H03F3/3067—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output with asymmetrical driving of the end stage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)

Abstract

a. Etage amplificateur de sortie à circuit de fréquence audio avec source de tension d'alimentation 16 et tension de référence. b. Etage amplificateur caractérisé par deux étages de sortie à transistors 26, 28 et deux amplificateurs différentiels 21, 25 tels que le premier ne donne pas de tension lorsque le second en donne une, un comparateur 11 recevant le signal d'entrée et un signal de rétroaction 33 pour modifier le signal d'entrée et supprimer toute discontinuité causée par décalage entre tensions et polarisation. c. Disposition applicable à des installations émettrices miniaturisées.
FR7905060A 1978-02-27 1979-02-27 Etage-amplificateur de sortie audio Granted FR2418572A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/881,306 US4146845A (en) 1978-02-27 1978-02-27 Audio amplifier output circuit

Publications (2)

Publication Number Publication Date
FR2418572A1 true FR2418572A1 (fr) 1979-09-21
FR2418572B1 FR2418572B1 (fr) 1985-05-03

Family

ID=25378211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905060A Granted FR2418572A1 (fr) 1978-02-27 1979-02-27 Etage-amplificateur de sortie audio

Country Status (6)

Country Link
US (1) US4146845A (fr)
JP (2) JPS54118155A (fr)
CA (1) CA1083233A (fr)
FR (1) FR2418572A1 (fr)
GB (1) GB2015286B (fr)
NL (1) NL179961C (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287389A (en) * 1978-10-30 1981-09-01 Gamble George W High-fidelity speaker system
US4385364A (en) * 1980-11-03 1983-05-24 Motorola, Inc. Electronic gain control circuit
US4453265A (en) * 1981-06-29 1984-06-05 General Research Of Electronics, Inc. Speaker driving circuit
DE3212188A1 (de) * 1982-04-01 1983-10-06 Siemens Ag Schaltungsanordnung zur verstaerkung von elektrischen signalen
NL8400634A (nl) * 1984-02-29 1985-09-16 Philips Nv Balansversterker.
IT1204809B (it) * 1986-02-19 1989-03-10 Sgs Microelettronica Spa Struttura di amplificatore di potenza per basse frequenze,in particolare di tipo integrato,ad alta stabilita'
JPH04196704A (ja) * 1990-11-27 1992-07-16 Matsushita Electric Ind Co Ltd 増幅回路
US5369355A (en) * 1992-11-12 1994-11-29 B/E Aerospace Compensation circuit for transformer linearization
US5399986A (en) * 1993-12-20 1995-03-21 Yen; Wailit Isolated multi-output power amplifier
CN111182157B (zh) * 2019-12-30 2021-02-09 泰弗思科技(安徽)有限公司 一种隔离式四线通话一分二电路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821656A (en) * 1971-10-12 1974-06-28 Sony Corp Transistor circuit for the driver stage of a class b amplifier
US3745477A (en) * 1972-01-26 1973-07-10 Honeywell Inc Amplifier apparatus for use with an inductive load
JPS5325232B2 (fr) * 1972-04-10 1978-07-25
DE2304162C3 (de) * 1973-01-29 1976-01-08 Robert 5300 Bonn Sczech Elektronischer Verstärker mit hohem Wirkungsgrad bzw. geringer elektrischer Verlustleistung
JPS49128669A (fr) * 1973-04-07 1974-12-10

Also Published As

Publication number Publication date
JPS621416U (fr) 1987-01-07
NL7901562A (nl) 1979-08-29
NL179961C (nl) 1986-12-01
JPS54118155A (en) 1979-09-13
US4146845A (en) 1979-03-27
GB2015286A (en) 1979-09-05
CA1083233A (fr) 1980-08-05
NL179961B (nl) 1986-07-01
GB2015286B (en) 1982-07-21
FR2418572B1 (fr) 1985-05-03

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Legal Events

Date Code Title Description
ST Notification of lapse