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KR900004098A - 이득 제어 증폭회로 - Google Patents

이득 제어 증폭회로 Download PDF

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Publication number
KR900004098A
KR900004098A KR1019890011443A KR890011443A KR900004098A KR 900004098 A KR900004098 A KR 900004098A KR 1019890011443 A KR1019890011443 A KR 1019890011443A KR 890011443 A KR890011443 A KR 890011443A KR 900004098 A KR900004098 A KR 900004098A
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KR
South Korea
Prior art keywords
transistors
current
transistor
collector
output
Prior art date
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Application number
KR1019890011443A
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English (en)
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KR0130767B1 (ko
Inventor
쯔도무 이시까와
Original Assignee
이우에 사또시
상요덴기 가부시끼가이샤
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Publication date
Application filed by 이우에 사또시, 상요덴기 가부시끼가이샤 filed Critical 이우에 사또시
Publication of KR900004098A publication Critical patent/KR900004098A/ko
Application granted granted Critical
Publication of KR0130767B1 publication Critical patent/KR0130767B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • 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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • 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
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements in emitter-coupled or cascode amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)

Abstract

내용 없음

Description

이득 제어 증폭회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 한 실시예를 도시한 회로도.
제2도는 써라운드 디코더 시스템을 설명하기 위한 회로도.
제4도는 본 발명의 별도 실시예를 도시한 회로도.
제5도는 제4도 회로의 구체 회로예를 도시한 회로도.

Claims (3)

  1. 입력신호를 증폭하는 전단 증폭회로, 베이스에 이득제어신호가 인가되는 차동 접속된 제1 및 제2트랜지스터, 콜렉터가 이 제1 및 제2트랜지스터의 공통 에미터에 접속되고 상기 전단 증폭회로의 출력신호에 따른 콜렉터 전류를 흐르게 하는 정전류 트랜지스터, 상기 제1트랜지스터의 콜렉터 전류를 상기 전단 증폭회로에 부귀환하는 부귀환로, 및 상기 제2트랜지스터의 콜렉터 전류를 출력신호로서 도출하는 출력단자를 구비하는 것을 특징으로 하는 이득 제어 증폭회로.
  2. 제1항에 있어서, 상기 정전류 트랜지스터는 다이오드 접속된 제3트랜지스터와 전류 밀러 관계로 접속되어, 상기 전단 증폭회로는 입력신호를 반전하는 반전 증폭부와 이 반전 증폭부의 출력신호에 따른 출력 전류를 발생하는 전류 발생부를 구비하고, 이 전류 발생부의 출력 전류를 상기 제3트랜지스터에 공급하는 것을 특징으로 하는 이득 제어 증폭회로.
  3. 차동 접속된 제1 및 제2트랜지스터, 동일하게 접속된 제3 및 제4트랜지스터, 콜렉터가 상기 제1 및 제2트랜지스터의 공통 에미터에 접속된 제5트랜지스터, 콜렉터가 상기 제3 및 제4트랜지스터의 공통 에미터에 접속된 제6트랜지스터, 상기 제5 및 제6트랜지스터의 공통 에미터에 동작 전류를 공급하는 정전류원, 입력신호를 증폭해서 상기 제5 및 제6트랜지스터의 베이스에 인가하는 전단 증폭회로, 상기 제1 및 제4트랜지스터의 콜렉터 전류를 상기 전단 증폭회로에 부귀환하는 부귀환로, 상기 제2 및 제3트랜지스터의 콜렉터 전류를 출력 전류로서 도출하는 출력단자, 및 상기 제1 내지 제4트랜지스터의 베이스에 이득 제어신호를 인가하기 위한 제어 입력단자를 구비하는 것을 특징으로 하는 이득 제어 증폭회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890011443A 1988-08-12 1989-08-11 이득 제어 증폭회로 Expired - Fee Related KR0130767B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63202224A JPH0250607A (ja) 1988-08-12 1988-08-12 利得制御増幅回路
JP63-202224 1988-08-12

Publications (2)

Publication Number Publication Date
KR900004098A true KR900004098A (ko) 1990-03-27
KR0130767B1 KR0130767B1 (ko) 1998-10-01

Family

ID=16454020

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890011443A Expired - Fee Related KR0130767B1 (ko) 1988-08-12 1989-08-11 이득 제어 증폭회로

Country Status (5)

Country Link
US (1) US4987380A (ko)
EP (1) EP0354513A3 (ko)
JP (1) JPH0250607A (ko)
KR (1) KR0130767B1 (ko)
CA (1) CA1301863C (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210069295A (ko) * 2019-12-03 2021-06-11 한국지역난방공사 발전용 선택적 촉매 환원 탈질설비용 기화기

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2610361B2 (ja) * 1990-07-19 1997-05-14 株式会社東芝 半導体集積回路
DE4235584A1 (de) * 1992-10-22 1994-04-28 Nokia Deutschland Gmbh Stellbarer elektronischer Widerstand
US5432476A (en) * 1993-04-09 1995-07-11 National Semiconductor Corporation Differential to single-ended converter
JPH1075132A (ja) * 1996-08-29 1998-03-17 Mitsumi Electric Co Ltd 差動増幅装置
PT971849E (pt) 1997-12-18 2002-08-30 Karl Keller Embalagem para produtos alimentares e processo de cozedura para produtos alimentares
US6181203B1 (en) * 1998-07-28 2001-01-30 Semtech Corporation Non-linear transconductance amplifier
RU2210165C2 (ru) * 2001-05-07 2003-08-10 Институт проблем управления им. В.А. Трапезникова РАН Преобразователь постоянного напряжения в постоянное
US6614300B2 (en) * 2001-08-27 2003-09-02 Nokia Corporation Dual current mirror power amplifier bias control

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL166162C (nl) * 1971-05-14 1981-06-15 Philips Nv Versterkerschakeling met regelbare versterking.
JPS546748A (en) * 1977-06-17 1979-01-19 Pioneer Electronic Corp Negative feedback amplifier gain control circuit
US4331929A (en) * 1979-04-04 1982-05-25 Nippon Gakki Seizo Kabushiki Kaisha Gain-controlled amplifier
JPS5646312A (en) * 1979-09-21 1981-04-27 Toshiba Corp Variable gain circuit
JPS5857807A (ja) * 1981-10-02 1983-04-06 Sony Corp 電圧制御可変利得回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210069295A (ko) * 2019-12-03 2021-06-11 한국지역난방공사 발전용 선택적 촉매 환원 탈질설비용 기화기

Also Published As

Publication number Publication date
EP0354513A3 (en) 1991-05-08
EP0354513A2 (en) 1990-02-14
US4987380A (en) 1991-01-22
CA1301863C (en) 1992-05-26
KR0130767B1 (ko) 1998-10-01
JPH0250607A (ja) 1990-02-20

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