CA2957919A1 - Device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker - Google Patents

Device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker Download PDF

Info

Publication number
CA2957919A1
CA2957919A1 CA2957919A CA2957919A CA2957919A1 CA 2957919 A1 CA2957919 A1 CA 2957919A1 CA 2957919 A CA2957919 A CA 2957919A CA 2957919 A CA2957919 A CA 2957919A CA 2957919 A1 CA2957919 A1 CA 2957919A1
Authority
CA
Canada
Prior art keywords
current
voltage
cndot
resistor
output
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.)
Abandoned
Application number
CA2957919A
Other languages
English (en)
French (fr)
Inventor
M. Christian Heil
Pierre Vaysse
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.)
L Acoustics SAS
Original Assignee
L Acoustics SAS
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 L Acoustics SAS filed Critical L Acoustics SAS
Publication of CA2957919A1 publication Critical patent/CA2957919A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/462—Indexing scheme relating to amplifiers the current being sensed

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)
CA2957919A 2016-02-15 2017-02-14 Device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker Abandoned CA2957919A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1651213A FR3047806B1 (fr) 2016-02-15 2016-02-15 Dispositif de mesure d'un courant electrique genere par un amplificateur acoustique pour actionner une enceinte acoustique
FR1651213 2016-02-15

Publications (1)

Publication Number Publication Date
CA2957919A1 true CA2957919A1 (en) 2017-08-15

Family

ID=55486979

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2957919A Abandoned CA2957919A1 (en) 2016-02-15 2017-02-14 Device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker

Country Status (8)

Country Link
US (1) US9949028B2 (enExample)
EP (1) EP3206038B1 (enExample)
JP (1) JP6872383B2 (enExample)
CN (1) CN107105379B (enExample)
CA (1) CA2957919A1 (enExample)
ES (1) ES2876357T3 (enExample)
FR (1) FR3047806B1 (enExample)
RU (1) RU2727074C2 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110932698A (zh) * 2019-12-17 2020-03-27 中晟微电子(南京)有限公司 一种高通滤波器的漏电流补偿电路
DE102021132633B4 (de) * 2021-12-10 2023-10-12 Infineon Technologies Ag Verfahren und Schaltung zur Stromerfassung
CN119561558B (zh) * 2024-11-27 2025-07-08 广州润芯信息技术有限公司 一种电流型发射机前端电路及发射系统

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221128A (en) * 1978-09-29 1980-09-09 Neil Brown Instruments Systems, Inc. Acoustic current meter
JP2862370B2 (ja) * 1990-11-29 1999-03-03 株式会社アドバンテスト 電流検出回路
US5517134A (en) * 1994-09-16 1996-05-14 Texas Instruments Incorporated Offset comparator with common mode voltage stability
JP3189605B2 (ja) * 1994-12-20 2001-07-16 ソニー株式会社 スピーカー駆動回路
JP2004053528A (ja) * 2002-07-23 2004-02-19 Mitsubishi Electric Corp 電流検出回路
RU2231797C1 (ru) * 2002-11-25 2004-06-27 Институт проблем управления им. В.А. Трапезникова РАН Измерительный преобразователь переменного напряжения в постоянное
JP2005117361A (ja) * 2003-10-08 2005-04-28 Sanyo Electric Co Ltd 音響装置及び音響装置の音響特性設定方法
US7960997B2 (en) * 2007-08-08 2011-06-14 Advanced Analogic Technologies, Inc. Cascode current sensor for discrete power semiconductor devices
RU2442177C1 (ru) * 2010-09-09 2012-02-10 Министерство Промышленности И Торговли Российской Федерации Интегратор тока
EP2453669A1 (en) * 2010-11-16 2012-05-16 Nxp B.V. Control of a loudspeaker output
EP2632174B1 (en) * 2012-02-27 2016-10-26 ST-Ericsson SA A circuit for use with a loudspeaker for portable equipments
CN102854365B (zh) * 2012-09-03 2015-04-08 中国科学院电工研究所 一种磁声电电流测量装置
US8902005B2 (en) * 2012-09-25 2014-12-02 Analog Devices, Inc. Apparatus and method for wide common mode difference
TW201415913A (zh) * 2012-10-08 2014-04-16 Chi Mei Comm Systems Inc 揚聲器系統及其檢測方法
US9253569B2 (en) * 2013-12-20 2016-02-02 Infineon Technologies Ag System and method for a cancelation circuit
US9983233B2 (en) * 2014-02-06 2018-05-29 Texas Instruments Incorporated Current sensor
CN103954823B (zh) * 2014-05-14 2016-08-10 中国科学院声学研究所 声表面波电流传感器

Also Published As

Publication number Publication date
JP6872383B2 (ja) 2021-05-19
RU2727074C2 (ru) 2020-07-17
ES2876357T3 (es) 2021-11-12
RU2017104737A3 (enExample) 2020-05-26
EP3206038B1 (fr) 2021-04-07
RU2017104737A (ru) 2018-08-14
FR3047806B1 (fr) 2019-07-26
FR3047806A1 (fr) 2017-08-18
US20170238093A1 (en) 2017-08-17
JP2017146306A (ja) 2017-08-24
CN107105379A (zh) 2017-08-29
US9949028B2 (en) 2018-04-17
EP3206038A1 (fr) 2017-08-16
CN107105379B (zh) 2020-11-24

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Legal Events

Date Code Title Description
FZDE Discontinued

Effective date: 20230516