ATE161439T1 - Hochdruck niedrigerimpedanz elektrostatischer wandler - Google Patents

Hochdruck niedrigerimpedanz elektrostatischer wandler

Info

Publication number
ATE161439T1
ATE161439T1 AT94921557T AT94921557T ATE161439T1 AT E161439 T1 ATE161439 T1 AT E161439T1 AT 94921557 T AT94921557 T AT 94921557T AT 94921557 T AT94921557 T AT 94921557T AT E161439 T1 ATE161439 T1 AT E161439T1
Authority
AT
Austria
Prior art keywords
gap
sheets
regions
electrostatic transducer
high pressure
Prior art date
Application number
AT94921557T
Other languages
English (en)
Inventor
Lorne A Whitehead
Original Assignee
Univ British Columbia
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 Univ British Columbia filed Critical Univ British Columbia
Application granted granted Critical
Publication of ATE161439T1 publication Critical patent/ATE161439T1/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0292—Electrostatic transducers, e.g. electret-type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
    • H02N1/002—Electrostatic motors
    • H02N1/006—Electrostatic motors of the gap-closing type

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measuring Fluid Pressure (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
AT94921557T 1993-07-14 1994-07-12 Hochdruck niedrigerimpedanz elektrostatischer wandler ATE161439T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/091,009 US5450498A (en) 1993-07-14 1993-07-14 High pressure low impedance electrostatic transducer

Publications (1)

Publication Number Publication Date
ATE161439T1 true ATE161439T1 (de) 1998-01-15

Family

ID=22225343

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94921557T ATE161439T1 (de) 1993-07-14 1994-07-12 Hochdruck niedrigerimpedanz elektrostatischer wandler

Country Status (8)

Country Link
US (1) US5450498A (de)
EP (1) EP0708689B1 (de)
JP (1) JPH09500247A (de)
AT (1) ATE161439T1 (de)
AU (1) AU7224494A (de)
CA (1) CA2159900A1 (de)
DE (1) DE69407592T2 (de)
WO (1) WO1995002464A1 (de)

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US6420814B1 (en) * 1999-05-18 2002-07-16 Stephen M. Bobbio Spiral wound transducer
WO2002015378A1 (fr) * 2000-08-11 2002-02-21 Ecchandes Inc. Stator piezoelectrique de type a recouvrement, actionneur piezoelectrique de type a recouvrement et applications associees
US7064740B2 (en) 2001-11-09 2006-06-20 Sharp Laboratories Of America, Inc. Backlit display with improved dynamic range
US6793177B2 (en) 2002-11-04 2004-09-21 The Bonutti 2003 Trust-A Active drag and thrust modulation system and method
US7623105B2 (en) 2003-11-21 2009-11-24 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive color
WO2005067453A2 (en) 2003-12-18 2005-07-28 Sharp Laboratories Of America, Inc. Dynamic gamma for a liquid crystal display
US7030536B2 (en) * 2003-12-29 2006-04-18 General Electric Company Micromachined ultrasonic transducer cells having compliant support structure
US7598651B2 (en) * 2004-03-12 2009-10-06 Sri International Mechanical meta-materials
US7612757B2 (en) 2004-05-04 2009-11-03 Sharp Laboratories Of America, Inc. Liquid crystal display with modulated black point
US8395577B2 (en) 2004-05-04 2013-03-12 Sharp Laboratories Of America, Inc. Liquid crystal display with illumination control
US7505018B2 (en) 2004-05-04 2009-03-17 Sharp Laboratories Of America, Inc. Liquid crystal display with reduced black level insertion
US7777714B2 (en) 2004-05-04 2010-08-17 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive width
US7532192B2 (en) 2004-05-04 2009-05-12 Sharp Laboratories Of America, Inc. Liquid crystal display with filtered black point
US7872631B2 (en) 2004-05-04 2011-01-18 Sharp Laboratories Of America, Inc. Liquid crystal display with temporal black point
US7602369B2 (en) 2004-05-04 2009-10-13 Sharp Laboratories Of America, Inc. Liquid crystal display with colored backlight
JP2005354582A (ja) * 2004-06-14 2005-12-22 Seiko Epson Corp 超音波トランスデューサ及びこれを用いた超音波スピーカ
US7023451B2 (en) 2004-06-14 2006-04-04 Sharp Laboratories Of America, Inc. System for reducing crosstalk
US7556836B2 (en) 2004-09-03 2009-07-07 Solae, Llc High protein snack product
US7898519B2 (en) 2005-02-17 2011-03-01 Sharp Laboratories Of America, Inc. Method for overdriving a backlit display
US7525528B2 (en) 2004-11-16 2009-04-28 Sharp Laboratories Of America, Inc. Technique that preserves specular highlights
US8050512B2 (en) 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US8050511B2 (en) 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
JP4706578B2 (ja) * 2005-09-27 2011-06-22 セイコーエプソン株式会社 静電型超音波トランスデューサ、静電型超音波トランスデューサの設計方法、静電型超音波トランスデューサの設計装置、静電型超音波トランスデューサの設計プログラム、製造方法及び表示装置
JP2008042869A (ja) * 2005-10-05 2008-02-21 Seiko Epson Corp 静電型超音波トランスデューサ、超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置
US8121401B2 (en) 2006-01-24 2012-02-21 Sharp Labortories of America, Inc. Method for reducing enhancement of artifacts and noise in image color enhancement
US9143657B2 (en) 2006-01-24 2015-09-22 Sharp Laboratories Of America, Inc. Color enhancement technique using skin color detection
US8941580B2 (en) 2006-11-30 2015-01-27 Sharp Laboratories Of America, Inc. Liquid crystal display with area adaptive backlight
US11778385B2 (en) * 2017-06-23 2023-10-03 Cochlear Limited Electromagnetic transducer with non-axial air gap
US11012788B2 (en) * 2018-03-27 2021-05-18 Sony Corporation Loudspeaker system
JP7149585B2 (ja) * 2018-12-17 2022-10-07 株式会社オーディオテクニカ 電気音響変換器及び電気音響変換装置

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Also Published As

Publication number Publication date
AU7224494A (en) 1995-02-13
DE69407592T2 (de) 1998-08-20
EP0708689B1 (de) 1997-12-29
WO1995002464A1 (en) 1995-01-26
DE69407592D1 (de) 1998-02-05
US5450498A (en) 1995-09-12
JPH09500247A (ja) 1997-01-07
EP0708689A1 (de) 1996-05-01
CA2159900A1 (en) 1995-01-26

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties