JPH0737369Y2 - 駆動装置の温度補償回路 - Google Patents

駆動装置の温度補償回路

Info

Publication number
JPH0737369Y2
JPH0737369Y2 JP1988134511U JP13451188U JPH0737369Y2 JP H0737369 Y2 JPH0737369 Y2 JP H0737369Y2 JP 1988134511 U JP1988134511 U JP 1988134511U JP 13451188 U JP13451188 U JP 13451188U JP H0737369 Y2 JPH0737369 Y2 JP H0737369Y2
Authority
JP
Japan
Prior art keywords
load
temperature
impedance
negative
drive
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 - Fee Related
Application number
JP1988134511U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0255717U (en]
Inventor
正夫 野呂
大介 鈴木
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.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP1988134511U priority Critical patent/JPH0737369Y2/ja
Priority to US07/421,256 priority patent/US4980920A/en
Priority to EP19890119188 priority patent/EP0364930A3/en
Publication of JPH0255717U publication Critical patent/JPH0255717U/ja
Application granted granted Critical
Publication of JPH0737369Y2 publication Critical patent/JPH0737369Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/369—A negative impedance circuit being added to an amplifier circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
JP1988134511U 1988-10-17 1988-10-17 駆動装置の温度補償回路 Expired - Fee Related JPH0737369Y2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1988134511U JPH0737369Y2 (ja) 1988-10-17 1988-10-17 駆動装置の温度補償回路
US07/421,256 US4980920A (en) 1988-10-17 1989-10-13 Negative impedance driving apparatus having temperature compensation circuit
EP19890119188 EP0364930A3 (en) 1988-10-17 1989-10-16 Negative impedance driving apparatus having temperature compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988134511U JPH0737369Y2 (ja) 1988-10-17 1988-10-17 駆動装置の温度補償回路

Publications (2)

Publication Number Publication Date
JPH0255717U JPH0255717U (en]) 1990-04-23
JPH0737369Y2 true JPH0737369Y2 (ja) 1995-08-23

Family

ID=15130034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988134511U Expired - Fee Related JPH0737369Y2 (ja) 1988-10-17 1988-10-17 駆動装置の温度補償回路

Country Status (3)

Country Link
US (1) US4980920A (en])
EP (1) EP0364930A3 (en])
JP (1) JPH0737369Y2 (en])

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322798A (ja) * 1989-06-20 1991-01-31 Yamaha Corp パワーアンプ用アダプタ
US5764781A (en) * 1995-12-12 1998-06-09 Ding; Chih-Shun Speaker and amplifier system
US5729611A (en) * 1996-02-02 1998-03-17 Bonneville; Marc Etienne Loudspeader overload protection
US6104817A (en) * 1996-12-12 2000-08-15 Ding; Chih-Shun Speaker and amplifier system
US6625287B1 (en) * 1998-02-26 2003-09-23 Michael Wurtz Enhancing automatic noise reduction using negative output resistance
JP3296311B2 (ja) * 1998-12-25 2002-06-24 ヤマハ株式会社 音響装置
US20030194097A1 (en) * 2002-04-16 2003-10-16 Chih-Shun Ding Motional feedback for a speaker system
US7092536B1 (en) * 2002-05-09 2006-08-15 Harman International Industries, Incorporated System for transducer compensation based on ambient conditions
US7215766B2 (en) 2002-07-22 2007-05-08 Lightspeed Aviation, Inc. Headset with auxiliary input jack(s) for cell phone and/or other devices
KR100532452B1 (ko) * 2003-07-22 2005-11-30 삼성전자주식회사 음성신호 재생 시스템 및 음성신호 재생방법
US7053705B2 (en) * 2003-12-22 2006-05-30 Tymphany Corporation Mixed-mode (current-voltage) audio amplifier
JP2007027821A (ja) * 2005-07-12 2007-02-01 Alpine Electronics Inc オーディオ装置
WO2008092111A2 (en) 2007-01-26 2008-07-31 Jm Electronics Ltd. Llc Drivers and methods for driving a load
US8401207B2 (en) * 2009-03-31 2013-03-19 Harman International Industries, Incorporated Motional feedback system
JP5321263B2 (ja) * 2009-06-12 2013-10-23 ソニー株式会社 信号処理装置、信号処理方法
CN102347059A (zh) * 2010-08-04 2012-02-08 鸿富锦精密工业（深圳）有限公司 音频播放器及具有音频播放器的电子装置
US8983080B2 (en) * 2011-07-22 2015-03-17 Texas Instruments Incorporated Method and system for temperature protection of a speaker
EP2712209B1 (en) * 2012-09-21 2021-01-13 Dialog Semiconductor BV Method and apparatus for computing metric values for loudspeaker protection
TWI488099B (zh) * 2013-06-20 2015-06-11 Ind Tech Res Inst 觸控裝置及感測補償方法
US9837066B2 (en) 2013-07-28 2017-12-05 Light Speed Aviation, Inc. System and method for adaptive active noise reduction
US9992596B2 (en) * 2014-11-28 2018-06-05 Audera Acoustics Inc. High displacement acoustic transducer systems
EP3121961B1 (en) * 2015-07-24 2019-04-03 Nxp B.V. Temperature sensing
IT201900015144A1 (it) * 2019-08-28 2021-02-28 St Microelectronics Srl Procedimento per monitorare carichi elettrici, circuito, amplificatore e sistema audio corrispondenti
KR20220046116A (ko) * 2020-10-07 2022-04-14 삼성전자주식회사 증폭기 및 증폭기를 포함하는 전자 장치

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525812A (en) * 1969-05-08 1970-08-25 James E Verdier Transducer circuit and method of operation
DE2631792B2 (de) * 1976-07-15 1981-01-15 Braun Ag, 6000 Frankfurt Dynamischer Lautsprecher
NL8001592A (nl) * 1980-03-18 1981-10-16 Philips Nv Mfb systeem met een overnamenetwerk.
JPS56134807A (en) * 1980-03-24 1981-10-21 Toshiba Corp Acoustic reproducing device
US4550430A (en) * 1981-02-20 1985-10-29 Meyers Stanley T Sound reproducing system utilizing motional feedback and an improved integrated magnetic structure
US4573189A (en) * 1983-10-19 1986-02-25 Velodyne Acoustics, Inc. Loudspeaker with high frequency motional feedback
US4614914A (en) * 1985-04-12 1986-09-30 Audio Precision, Inc. Low-distortion transformer-coupled circuit
US4837832A (en) * 1987-10-20 1989-06-06 Sol Fanshel Electronic hearing aid with gain control means for eliminating low frequency noise

Also Published As

Publication number Publication date
JPH0255717U (en]) 1990-04-23
EP0364930A3 (en) 1991-04-03
EP0364930A2 (en) 1990-04-25
US4980920A (en) 1990-12-25

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees