KR920005458A - 증폭 회로 - Google Patents

증폭 회로 Download PDF

Info

Publication number
KR920005458A
KR920005458A KR1019910015002A KR910015002A KR920005458A KR 920005458 A KR920005458 A KR 920005458A KR 1019910015002 A KR1019910015002 A KR 1019910015002A KR 910015002 A KR910015002 A KR 910015002A KR 920005458 A KR920005458 A KR 920005458A
Authority
KR
South Korea
Prior art keywords
amplifying
signal
output signal
pass filter
low pass
Prior art date
Application number
KR1019910015002A
Other languages
English (en)
Other versions
KR0170777B1 (ko
Inventor
마사노리 후지사와
히로시 고지마
Original Assignee
이우에 사또시
상요덴기 가부시끼가이샤
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 이우에 사또시, 상요덴기 가부시끼가이샤 filed Critical 이우에 사또시
Publication of KR920005458A publication Critical patent/KR920005458A/ko
Application granted granted Critical
Publication of KR0170777B1 publication Critical patent/KR0170777B1/ko

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181Low-frequency amplifiers, e.g. audio preamplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G5/00Tone control or bandwidth control in amplifiers
    • H03G5/02Manually-operated control
    • H03G5/04Manually-operated control in untuned amplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G9/00Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/12Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/14Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)

Abstract

내용 없음

Description

증폭 회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 관한 증폭 회로의 양호한 실시예를 설명하는 회로도.

Claims (1)

  1. 음향 신호를 증폭하는 증폭 회로에 있어서, 음향 신호의 저주파 성분을 통과시킴과 동시에 위상 반전하는 저역 통과 필터, 상기 음향 신호를 증폭함과 동시에 상기 저역 통과 필터의 출력 신호를 반전 증폭하는 제1증폭수단, 상기 저역 통과필터의 출력 신호를 증폭하는 제2증폭 수산, 상기 제1증폭 수단의 출력신호가 한 끝에 인가되고, 상기 제2증폭 수단의 출력 신호가 다른 끝에 인가되는 부하를 포함하고, 상기 음향 신호를 증폭함과 동시에 상기 음향 신호의 저주파 성분을 BTL 증폭하는 것을 특징으로 하는 증폭회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임
KR1019910015002A 1990-08-30 1991-08-29 증폭 회로 KR0170777B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP23043690A JP2714241B2 (ja) 1990-08-30 1990-08-30 増幅回路
JP90-230436 1990-08-30
JP2-230436 1990-08-30

Publications (2)

Publication Number Publication Date
KR920005458A true KR920005458A (ko) 1992-03-28
KR0170777B1 KR0170777B1 (ko) 1999-03-30

Family

ID=16907876

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910015002A KR0170777B1 (ko) 1990-08-30 1991-08-29 증폭 회로

Country Status (3)

Country Link
US (1) US5325440A (ko)
JP (1) JP2714241B2 (ko)
KR (1) KR0170777B1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5930373A (en) * 1997-04-04 1999-07-27 K.S. Waves Ltd. Method and system for enhancing quality of sound signal
US6529787B2 (en) 1999-11-15 2003-03-04 Labtec Corporation Multimedia computer speaker system with bridge-coupled subwoofer
US7016509B1 (en) 2000-09-08 2006-03-21 Harman International Industries, Inc. System and method for varying low audio frequencies inversely with audio signal level
KR101017733B1 (ko) * 2007-08-27 2011-02-28 산요 세미컨덕터 컴퍼니 리미티드 부하를 구동하는 파워 앰프
US20090257601A1 (en) * 2008-04-12 2009-10-15 Marvin Andrew Motsenbocker Acoustic speaker system with strong bass capability
TW201025841A (en) * 2008-12-31 2010-07-01 Princeton Technology Corp Loudness circuit without operational amplifier
CN102420576A (zh) * 2011-11-21 2012-04-18 上海大亚科技有限公司 音频运算放大电路结构及音频输出电路结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320224Y2 (ko) * 1973-08-01 1978-05-27
US4186273A (en) * 1978-06-05 1980-01-29 Bose Corporation Stereophonic system having power amplifiers and speakers in a bridge circuit with capacitor connecting junction of speakers to common terminal
JPS62130007A (ja) * 1985-12-02 1987-06-12 Matsushita Electric Ind Co Ltd 低周波信号増幅回路
US4982435A (en) * 1987-04-17 1991-01-01 Sanyo Electric Co., Ltd. Automatic loudness control circuit
US4891841A (en) * 1988-02-22 1990-01-02 Rane Corporation Reciprocal, subtractive, audio spectrum equalizer

Also Published As

Publication number Publication date
JP2714241B2 (ja) 1998-02-16
JPH04111510A (ja) 1992-04-13
US5325440A (en) 1994-06-28
KR0170777B1 (ko) 1999-03-30

Similar Documents

Publication Publication Date Title
KR960703288A (ko) 개선된 에코 제거기를 갖는 신호 증폭기 시스템(Signal amplifier system with improved echo cancellation)
KR910017736A (ko) 이득가변증폭기
KR950002203A (ko) 증폭기 장치
KR920005458A (ko) 증폭 회로
KR870006800A (ko) 음장 확대장치
KR910021177A (ko) 음향부가회로
KR910009055A (ko) 영상신호잡음 저감회로
KR910002107A (ko) 주파수 특성 보정회로
KR890016850A (ko) 모드 판별회로
KR910010830A (ko) 전력증폭장치
KR880005741A (ko) 증폭기
KR950013017A (ko) 고주파 대역 증폭기
KR900004179A (ko) 잡음저감회로
KR970009193A (ko) 영상출력장치의 동기신호분리회로
KR910017731A (ko) 증폭기 회로
KR910013696A (ko) 아날로그 필터회로
KR920001494A (ko) 비선형 디엠파시스 회로
KR950007274A (ko) 서라운드신호 출력회로
KR910021079A (ko) 전화기의 수신감도 조절회로
KR920003237A (ko) 피아노 현의고저 및 강약 측정장치
KR910013188A (ko) 디지탈 신호 재생회로
KR920013892A (ko) 신호 증폭 회로
KR900008767A (ko) 증폭기 회로
KR950013020A (ko) 오디오 신호의 다이나믹 레인지 확장회로
KR970050098A (ko) 소음 감쇄장치

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20081010

Year of fee payment: 11

LAPS Lapse due to unpaid annual fee