NO20032013L - Impedansdeteksjonskrets, metode derav og elektrostatisk kapasitansdeteksjonskrets - Google Patents
Impedansdeteksjonskrets, metode derav og elektrostatisk kapasitansdeteksjonskretsInfo
- Publication number
- NO20032013L NO20032013L NO20032013A NO20032013A NO20032013L NO 20032013 L NO20032013 L NO 20032013L NO 20032013 A NO20032013 A NO 20032013A NO 20032013 A NO20032013 A NO 20032013A NO 20032013 L NO20032013 L NO 20032013L
- Authority
- NO
- Norway
- Prior art keywords
- detection circuit
- input terminal
- electrostatic capacitance
- operational amplifier
- impedance converter
- Prior art date
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
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Circuit For Audible Band Transducer (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001270877 | 2001-09-06 | ||
PCT/JP2002/009137 WO2003023420A1 (en) | 2001-09-06 | 2002-09-06 | Impedance measuring circuit, its method, and capacitance measuring circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20032013D0 NO20032013D0 (no) | 2003-05-05 |
NO20032013L true NO20032013L (no) | 2003-06-19 |
Family
ID=19096476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20032013A NO20032013L (no) | 2001-09-06 | 2003-05-05 | Impedansdeteksjonskrets, metode derav og elektrostatisk kapasitansdeteksjonskrets |
Country Status (9)
Country | Link |
---|---|
US (1) | US7005865B2 (zh) |
EP (1) | EP1426772B1 (zh) |
KR (1) | KR100654471B1 (zh) |
CN (1) | CN100454028C (zh) |
AT (1) | ATE389185T1 (zh) |
DE (1) | DE60225570T2 (zh) |
NO (1) | NO20032013L (zh) |
TW (1) | TWI221196B (zh) |
WO (1) | WO2003023420A1 (zh) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8247883B2 (en) * | 2008-12-04 | 2012-08-21 | Palo Alto Research Center Incorporated | Printing shielded connections and circuits |
JP5544717B2 (ja) * | 2009-01-15 | 2014-07-09 | 富士通株式会社 | 半導体装置及び試験方法 |
US8362784B2 (en) * | 2009-06-22 | 2013-01-29 | Mitsubishi Electric Corporation | Capacitor capacitance diagnosis device and electric power apparatus equipped with capacitor capacitance diagnosis device |
NL2007186C2 (nl) * | 2011-07-28 | 2013-01-29 | Fluid Well Instr B V | Voor hoogfrequente storingen ongevoelige capacitieve meetschakeling. |
JP2013061177A (ja) * | 2011-09-12 | 2013-04-04 | Nidec-Read Corp | インピーダンス測定装置 |
DE102011083052B4 (de) * | 2011-09-20 | 2016-03-10 | Hauni Maschinenbau Ag | Kapazitive HF-Strangmessvorrichtung und Strangmaschine |
US9645193B2 (en) | 2012-10-23 | 2017-05-09 | Keithley Instruments, Llc | Impedance source ranging apparatus and method |
CN104685904B (zh) * | 2013-01-08 | 2017-10-03 | 广东得胜电子有限公司 | 电容式麦克风及其阻抗变换器 |
CN103344172B (zh) * | 2013-07-09 | 2015-08-12 | 中国工程物理研究院总体工程研究所 | 一种减少电磁脉冲干扰的电容测微仪采集处理装置和方法 |
CN105277786A (zh) * | 2014-07-25 | 2016-01-27 | 南京瀚宇彩欣科技有限责任公司 | 传感器的最大阻抗检测方法及检测装置 |
CN104640053A (zh) | 2015-01-19 | 2015-05-20 | 矽力杰半导体技术(杭州)有限公司 | 扬声器的直流阻抗检测方法、电路以及d类音频放大器 |
CN106341763B (zh) | 2016-11-17 | 2019-07-30 | 矽力杰半导体技术(杭州)有限公司 | 扬声器驱动装置和扬声器驱动方法 |
CN106454679B (zh) | 2016-11-17 | 2019-05-21 | 矽力杰半导体技术(杭州)有限公司 | 扬声器振膜状态估计方法及应用其的扬声器驱动电路 |
CN107422192B (zh) * | 2017-08-02 | 2020-05-08 | 广州市锐丰音响科技股份有限公司 | 音频设备输入阻抗测量方法和装置、测量校验方法和装置 |
CN107274644A (zh) * | 2017-08-11 | 2017-10-20 | 四川赛科安全技术有限公司 | 一种检测消防总线容性大小的方法 |
JP7122686B2 (ja) * | 2018-03-30 | 2022-08-22 | パナソニックIpマネジメント株式会社 | 静電容量検出装置 |
CN108693408B (zh) * | 2018-08-22 | 2020-07-07 | 广东电网有限责任公司 | 超级电容器内阻检测方法、装置和计算机可读存储介质 |
CN114812618B (zh) * | 2021-12-24 | 2023-03-07 | 中国科学院长春光学精密机械与物理研究所 | 频点噪声抑制系统 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3221800A1 (de) * | 1982-06-05 | 1983-12-08 | Martin Dipl Ing Kueper | Messmethode zur bestimmung von lautsprecherdaten |
US4918376A (en) * | 1989-03-07 | 1990-04-17 | Ade Corporation | A.C. capacitive gauging system |
DK170196B1 (da) | 1993-04-07 | 1995-06-06 | Brueel & Kjaer As | Fremgangsmåde og kobling til at reducere den harmoniske forvrængning af en kapacitiv transducer |
JPH09280806A (ja) | 1996-04-09 | 1997-10-31 | Nissan Motor Co Ltd | 静電容量式変位計 |
AU729354B2 (en) * | 1998-01-23 | 2001-02-01 | Hokuto Electronics, Inc. | Impedance-to-voltage converter |
DE69934359T2 (de) * | 1998-02-05 | 2007-04-19 | Tokyo Electron Ltd. | Impedanz-spannungswandler und wandlungsverfahren |
TW526327B (en) * | 1998-02-19 | 2003-04-01 | Sumitomo Metal Ind | Detection apparatus and method of physical variable |
JP4124867B2 (ja) * | 1998-07-14 | 2008-07-23 | 松下電器産業株式会社 | 変換装置 |
JP3501401B2 (ja) | 2000-03-07 | 2004-03-02 | 住友金属工業株式会社 | インピーダンス検出回路、インピーダンス検出装置、及びインピーダンス検出方法 |
JP3454426B2 (ja) * | 2000-07-10 | 2003-10-06 | 住友金属工業株式会社 | インピーダンス検出回路及びインピーダンス検出方法 |
JP3501398B2 (ja) * | 2000-07-10 | 2004-03-02 | 住友金属工業株式会社 | インピーダンス検出回路及びインピーダンス検出方法 |
JP2002157671A (ja) * | 2000-11-16 | 2002-05-31 | Sumitomo Metal Ind Ltd | センシングシステム |
ITTO20010699A1 (it) * | 2001-07-17 | 2003-01-17 | St Microelectronics Srl | Metodo e circuito di rilevamento di spostamenti tramite sensori micro-elettro-meccanici con compensazione di capacita' parassite e di movime |
-
2002
- 2002-09-05 TW TW091120338A patent/TWI221196B/zh not_active IP Right Cessation
- 2002-09-06 US US10/488,679 patent/US7005865B2/en not_active Expired - Fee Related
- 2002-09-06 WO PCT/JP2002/009137 patent/WO2003023420A1/ja active IP Right Grant
- 2002-09-06 CN CNB028173929A patent/CN100454028C/zh not_active Expired - Fee Related
- 2002-09-06 KR KR1020047003319A patent/KR100654471B1/ko not_active IP Right Cessation
- 2002-09-06 EP EP02767921A patent/EP1426772B1/en not_active Expired - Lifetime
- 2002-09-06 AT AT02767921T patent/ATE389185T1/de not_active IP Right Cessation
- 2002-09-06 DE DE60225570T patent/DE60225570T2/de not_active Expired - Lifetime
-
2003
- 2003-05-05 NO NO20032013A patent/NO20032013L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP1426772A1 (en) | 2004-06-09 |
WO2003023420A1 (en) | 2003-03-20 |
DE60225570D1 (de) | 2008-04-24 |
KR20040040454A (ko) | 2004-05-12 |
CN100454028C (zh) | 2009-01-21 |
ATE389185T1 (de) | 2008-03-15 |
US20050035771A1 (en) | 2005-02-17 |
DE60225570T2 (de) | 2009-04-23 |
TWI221196B (en) | 2004-09-21 |
EP1426772B1 (en) | 2008-03-12 |
CN1842712A (zh) | 2006-10-04 |
KR100654471B1 (ko) | 2006-12-05 |
NO20032013D0 (no) | 2003-05-05 |
US7005865B2 (en) | 2006-02-28 |
EP1426772A4 (en) | 2005-08-03 |
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Legal Events
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FC2A | Withdrawal, rejection or dismissal of laid open patent application |