ATA778276A - Piezoelektrischer resonator - Google Patents

Piezoelektrischer resonator

Info

Publication number
ATA778276A
ATA778276A AT778276A AT778276A ATA778276A AT A778276 A ATA778276 A AT A778276A AT 778276 A AT778276 A AT 778276A AT 778276 A AT778276 A AT 778276A AT A778276 A ATA778276 A AT A778276A
Authority
AT
Austria
Prior art keywords
piezoelectric resonator
resonator
piezoelectric
Prior art date
Application number
AT778276A
Other languages
English (en)
Other versions
AT353506B (de
Inventor
Dieter Dipl Ing Dr Hammer
Ewald Dipl Ing Dr Benes
Original Assignee
List Hans
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 List Hans filed Critical List Hans
Priority to AT778276A priority Critical patent/AT353506B/de
Priority to CH1251377A priority patent/CH620793A5/de
Priority to US05/843,215 priority patent/US4166967A/en
Priority to DE2746712A priority patent/DE2746712C3/de
Priority to GB43474/77A priority patent/GB1577692A/en
Priority to JP12635877A priority patent/JPS5350991A/ja
Publication of ATA778276A publication Critical patent/ATA778276A/de
Application granted granted Critical
Publication of AT353506B publication Critical patent/AT353506B/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/54—Control of the diagnostic device
    • A61B8/546—Control of the diagnostic device involving monitoring or regulation of device temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/32—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using change of resonant frequency of a crystal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
    • G01L1/162—Measuring force or stress, in general using properties of piezoelectric devices using piezoelectric resonators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0008—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations
    • G01L9/0022—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using vibrations of a piezoelectric element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
    • G01P15/0907—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up of the compression mode type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02086—Means for compensation or elimination of undesirable effects
    • H03H9/02094—Means for compensation or elimination of undesirable effects of adherence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02827—Elastic parameters, strength or force

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Measuring Fluid Pressure (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
AT778276A 1976-10-19 1976-10-19 Piezoelektrischer resonator AT353506B (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT778276A AT353506B (de) 1976-10-19 1976-10-19 Piezoelektrischer resonator
CH1251377A CH620793A5 (de) 1976-10-19 1977-10-13
US05/843,215 US4166967A (en) 1976-10-19 1977-10-18 Piezoelectric resonator with acoustic reflectors
DE2746712A DE2746712C3 (de) 1976-10-19 1977-10-18 Piezoelektrischer Resonator
GB43474/77A GB1577692A (en) 1976-10-19 1977-10-19 Piezoelectric resonator
JP12635877A JPS5350991A (en) 1976-10-19 1977-10-19 Piezooelectric resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT778276A AT353506B (de) 1976-10-19 1976-10-19 Piezoelektrischer resonator

Publications (2)

Publication Number Publication Date
ATA778276A true ATA778276A (de) 1979-04-15
AT353506B AT353506B (de) 1979-11-26

Family

ID=3599428

Family Applications (1)

Application Number Title Priority Date Filing Date
AT778276A AT353506B (de) 1976-10-19 1976-10-19 Piezoelektrischer resonator

Country Status (6)

Country Link
US (1) US4166967A (de)
JP (1) JPS5350991A (de)
AT (1) AT353506B (de)
CH (1) CH620793A5 (de)
DE (1) DE2746712C3 (de)
GB (1) GB1577692A (de)

Families Citing this family (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383194A (en) * 1979-05-01 1983-05-10 Toray Industries, Inc. Electro-acoustic transducer element
US4448546A (en) * 1980-11-28 1984-05-15 Novex, Inc. Digital temperature sensor
AT369900B (de) * 1981-05-20 1983-02-10 List Hans Messwertaufnehmer mit piezoelektrischem sensorelement
US4427913A (en) 1981-06-01 1984-01-24 The United States Of America As Represented By The Secretary Of The Army Acoustic diffractometer
JPS5974498U (ja) * 1982-11-10 1984-05-21 株式会社山武 空調用挿入形温度センサの構造
US4479070A (en) * 1983-06-10 1984-10-23 Sperry Corporation Vibrating quartz diaphragm pressure sensor
FR2551611B1 (fr) * 1983-08-31 1986-10-24 Labo Electronique Physique Nouvelle structure de transducteur ultrasonore et appareil d'examen de milieux par echographie ultrasonore comprenant une telle structure
DE3430161A1 (de) * 1984-08-16 1986-02-27 Siemens AG, 1000 Berlin und 8000 München Poroese anpassungsschicht in einem ultraschallapplikator
NL8501908A (nl) * 1985-07-03 1987-02-02 Tno Tastsensor.
JPS62258597A (ja) * 1986-04-25 1987-11-11 Yokogawa Medical Syst Ltd 超音波トランスデユ−サ
US4961347A (en) * 1987-11-25 1990-10-09 Ishikawajima-Harima Heavy Industries Co., Ltd. Probe for ultrasonic flaw detectors
DE3920663A1 (de) * 1989-06-23 1991-01-10 Siemens Ag Breitstrahlender ultraschallwandler
EP0451306B1 (de) * 1990-04-09 1997-07-16 Siemens Aktiengesellschaft Frequenzselektiver Ultraschall-Schichtwandler
US5268610A (en) * 1991-12-30 1993-12-07 Xerox Corporation Acoustic ink printer
US5373268A (en) * 1993-02-01 1994-12-13 Motorola, Inc. Thin film resonator having stacked acoustic reflecting impedance matching layers and method
US5335209A (en) * 1993-05-06 1994-08-02 Westinghouse Electric Corp. Acoustic sensor and projector module having an active baffle structure
US5422533A (en) * 1994-03-09 1995-06-06 The United States Of America As Represented By The Secretary Of The Army Piezoelectric resonator
US5864261A (en) * 1994-05-23 1999-01-26 Iowa State University Research Foundation Multiple layer acoustical structures for thin-film resonator based circuits and systems
US5598051A (en) * 1994-11-21 1997-01-28 General Electric Company Bilayer ultrasonic transducer having reduced total electrical impedance
US5629906A (en) * 1995-02-15 1997-05-13 Hewlett-Packard Company Ultrasonic transducer
US5630949A (en) * 1995-06-01 1997-05-20 Tfr Technologies, Inc. Method and apparatus for fabricating a piezoelectric resonator to a resonant frequency
US5696423A (en) * 1995-06-29 1997-12-09 Motorola, Inc. Temperature compenated resonator and method
US5596239A (en) * 1995-06-29 1997-01-21 Motorola, Inc. Enhanced quality factor resonator
US5617065A (en) * 1995-06-29 1997-04-01 Motorola, Inc. Filter using enhanced quality factor resonator and method
WO1997017018A1 (en) * 1995-11-09 1997-05-15 Brigham & Women's Hospital Aperiodic ultrasound phased array
WO1998001732A1 (en) * 1996-07-09 1998-01-15 Panex Corporation Quartz transducer
US5873154A (en) * 1996-10-17 1999-02-23 Nokia Mobile Phones Limited Method for fabricating a resonator having an acoustic mirror
DE69739289D1 (de) * 1996-10-17 2009-04-16 Avago Technologies Wireless Ip Chtoberflächenwellenresonatoren
US5872493A (en) 1997-03-13 1999-02-16 Nokia Mobile Phones, Ltd. Bulk acoustic wave (BAW) filter having a top portion that includes a protective acoustic mirror
US5910756A (en) * 1997-05-21 1999-06-08 Nokia Mobile Phones Limited Filters and duplexers utilizing thin film stacked crystal filter structures and thin film bulk acoustic wave resonators
US6049159A (en) * 1997-10-06 2000-04-11 Albatros Technologies, Inc. Wideband acoustic transducer
US6050943A (en) 1997-10-14 2000-04-18 Guided Therapy Systems, Inc. Imaging, therapy, and temperature monitoring ultrasonic system
US6081171A (en) * 1998-04-08 2000-06-27 Nokia Mobile Phones Limited Monolithic filters utilizing thin film bulk acoustic wave devices and minimum passive components for controlling the shape and width of a passband response
US5936150A (en) * 1998-04-13 1999-08-10 Rockwell Science Center, Llc Thin film resonant chemical sensor with resonant acoustic isolator
AU1128600A (en) 1998-11-20 2000-06-13 Joie P. Jones Methods for selectively dissolving and removing materials using ultra-high frequency ultrasound
DE19928176A1 (de) * 1999-06-19 2001-01-04 Bosch Gmbh Robert Piezoaktor
US6307302B1 (en) * 1999-07-23 2001-10-23 Measurement Specialities, Inc. Ultrasonic transducer having impedance matching layer
US6441703B1 (en) * 2000-01-18 2002-08-27 Texas Instruments Incorporated Multiple frequency acoustic reflector array and monolithic cover for resonators and method
US6452310B1 (en) * 2000-01-18 2002-09-17 Texas Instruments Incorporated Thin film resonator and method
US7914453B2 (en) 2000-12-28 2011-03-29 Ardent Sound, Inc. Visual imaging system for ultrasonic probe
US6509813B2 (en) * 2001-01-16 2003-01-21 Nokia Mobile Phones Ltd. Bulk acoustic wave resonator with a conductive mirror
WO2003012988A2 (de) * 2001-07-30 2003-02-13 Infineon Technologies Ag Piezoelektrische resonatorvorrichtung mit akustischem reflektor
US7092659B2 (en) 2003-12-31 2006-08-15 Samsung Electronics Co., Ltd. Discharge methods and systems in electrophotography
US7393325B2 (en) 2004-09-16 2008-07-01 Guided Therapy Systems, L.L.C. Method and system for ultrasound treatment with a multi-directional transducer
US7824348B2 (en) 2004-09-16 2010-11-02 Guided Therapy Systems, L.L.C. System and method for variable depth ultrasound treatment
US9011336B2 (en) * 2004-09-16 2015-04-21 Guided Therapy Systems, Llc Method and system for combined energy therapy profile
US10864385B2 (en) 2004-09-24 2020-12-15 Guided Therapy Systems, Llc Rejuvenating skin by heating tissue for cosmetic treatment of the face and body
US7530958B2 (en) * 2004-09-24 2009-05-12 Guided Therapy Systems, Inc. Method and system for combined ultrasound treatment
US8535228B2 (en) 2004-10-06 2013-09-17 Guided Therapy Systems, Llc Method and system for noninvasive face lifts and deep tissue tightening
US8444562B2 (en) 2004-10-06 2013-05-21 Guided Therapy Systems, Llc System and method for treating muscle, tendon, ligament and cartilage tissue
US20060111744A1 (en) 2004-10-13 2006-05-25 Guided Therapy Systems, L.L.C. Method and system for treatment of sweat glands
US8690779B2 (en) 2004-10-06 2014-04-08 Guided Therapy Systems, Llc Noninvasive aesthetic treatment for tightening tissue
US8133180B2 (en) 2004-10-06 2012-03-13 Guided Therapy Systems, L.L.C. Method and system for treating cellulite
US11235179B2 (en) 2004-10-06 2022-02-01 Guided Therapy Systems, Llc Energy based skin gland treatment
US9694212B2 (en) 2004-10-06 2017-07-04 Guided Therapy Systems, Llc Method and system for ultrasound treatment of skin
KR20240113495A (ko) 2004-10-06 2024-07-22 가이디드 테라피 시스템스, 엘.엘.씨. 초음파 치료 시스템
US7530356B2 (en) * 2004-10-06 2009-05-12 Guided Therapy Systems, Inc. Method and system for noninvasive mastopexy
US9827449B2 (en) 2004-10-06 2017-11-28 Guided Therapy Systems, L.L.C. Systems for treating skin laxity
EP2279699B1 (de) 2004-10-06 2019-07-24 Guided Therapy Systems, L.L.C. Verfahren zur nicht invasiven kosmetischen Verbesserung von Cellulitis
US11883688B2 (en) 2004-10-06 2024-01-30 Guided Therapy Systems, Llc Energy based fat reduction
US7758524B2 (en) 2004-10-06 2010-07-20 Guided Therapy Systems, L.L.C. Method and system for ultra-high frequency ultrasound treatment
US11207548B2 (en) 2004-10-07 2021-12-28 Guided Therapy Systems, L.L.C. Ultrasound probe for treating skin laxity
US11724133B2 (en) 2004-10-07 2023-08-15 Guided Therapy Systems, Llc Ultrasound probe for treatment of skin
WO2006100457A1 (en) * 2005-03-22 2006-09-28 Aviza Technology Limited A method of forming a bragg reflector stack
JP4695188B2 (ja) 2005-04-25 2011-06-08 アーデント サウンド， インコーポレイテッド コンピュータ周辺機器の安全性を向上させるための方法および装置
WO2007004435A1 (ja) * 2005-06-30 2007-01-11 Matsushita Electric Industrial Co., Ltd. 音響共振器及びフィルタ
US8030824B2 (en) * 2005-08-08 2011-10-04 Koninklijke Philips Electronics N.V. Wide bandwidth matrix transducer with polyethylene third matching layer
US7859170B2 (en) * 2005-08-08 2010-12-28 Koninklijke Philips Electronics N.V. Wide-bandwidth matrix transducer with polyethylene third matching layer
US8270251B2 (en) 2005-12-05 2012-09-18 Xact Downhole Telemetry Inc. Acoustic isolator
DE102006023165B4 (de) * 2006-05-17 2008-02-14 Infineon Technologies Ag Verfahren zur Herstellung eines akustischen Spiegels aus alternierend angeordneten Schichten hoher und niedriger akustischer Impedanz
US9566454B2 (en) * 2006-09-18 2017-02-14 Guided Therapy Systems, Llc Method and sysem for non-ablative acne treatment and prevention
US20150174388A1 (en) 2007-05-07 2015-06-25 Guided Therapy Systems, Llc Methods and Systems for Ultrasound Assisted Delivery of a Medicant to Tissue
EP3181183A1 (de) 2007-05-07 2017-06-21 Guided Therapy Systems, L.L.C. Verfahren und systeme zur modulation von arzneimitteln unter verwendung von akustischer energie
FR2919050B1 (fr) 2007-07-20 2012-03-23 Centre Nat Rech Scient Jauge de contrainte de type structure resonante acoustique et capteur d'au moins un parametre physique utilisant une telle jauge de contrainte.
PT3058875T (pt) 2008-06-06 2022-09-20 Ulthera Inc Sistema para tratamento cosmético e imagiologia
US12102473B2 (en) 2008-06-06 2024-10-01 Ulthera, Inc. Systems for ultrasound treatment
WO2010075547A2 (en) 2008-12-24 2010-07-01 Guided Therapy Systems, Llc Methods and systems for fat reduction and/or cellulite treatment
US8715186B2 (en) 2009-11-24 2014-05-06 Guided Therapy Systems, Llc Methods and systems for generating thermal bubbles for improved ultrasound imaging and therapy
US9504446B2 (en) 2010-08-02 2016-11-29 Guided Therapy Systems, Llc Systems and methods for coupling an ultrasound source to tissue
KR20190008986A (ko) 2010-08-02 2019-01-25 가이디드 테라피 시스템스, 엘.엘.씨. 초음파 치료 시스템 및 방법
US8857438B2 (en) 2010-11-08 2014-10-14 Ulthera, Inc. Devices and methods for acoustic shielding
AT511330B1 (de) 2011-06-03 2012-11-15 Piezocryst Advanced Sensorics Sensor für die messung von druck und/oder kraft
US9452302B2 (en) 2011-07-10 2016-09-27 Guided Therapy Systems, Llc Systems and methods for accelerating healing of implanted material and/or native tissue
KR20190080967A (ko) 2011-07-11 2019-07-08 가이디드 테라피 시스템스, 엘.엘.씨. 조직에 초음파원을 연결하는 시스템 및 방법
US9263663B2 (en) 2012-04-13 2016-02-16 Ardent Sound, Inc. Method of making thick film transducer arrays
US9510802B2 (en) 2012-09-21 2016-12-06 Guided Therapy Systems, Llc Reflective ultrasound technology for dermatological treatments
CN204017181U (zh) 2013-03-08 2014-12-17 奥赛拉公司 美学成像与处理系统、多焦点处理系统和执行美容过程的系统
US10561862B2 (en) 2013-03-15 2020-02-18 Guided Therapy Systems, Llc Ultrasound treatment device and methods of use
KR102465947B1 (ko) 2014-04-18 2022-11-10 얼테라, 인크 밴드 트랜스듀서 초음파 치료
CN104568239B (zh) * 2014-12-09 2017-11-21 太原航空仪表有限公司 一种9mm压电激励小型振动筒压力传感器
EP3295494B1 (de) * 2015-05-11 2022-04-06 Measurement Specialties, Inc. Impedanzanpassungsschicht für ultraschallwandler mit metallischer schutzstruktur
WO2017127328A1 (en) 2016-01-18 2017-07-27 Ulthera, Inc. Compact ultrasound device having annular ultrasound array peripherally electrically connected to flexible printed circuit board and method of assembly thereof
SG11201809850QA (en) 2016-08-16 2018-12-28 Ulthera Inc Systems and methods for cosmetic ultrasound treatment of skin
TWI797235B (zh) 2018-01-26 2023-04-01 美商奧賽拉公司 用於多個維度中的同時多聚焦超音治療的系統和方法
WO2019164836A1 (en) 2018-02-20 2019-08-29 Ulthera, Inc. Systems and methods for combined cosmetic treatment of cellulite with ultrasound
CN119951055A (zh) 2018-11-30 2025-05-09 奥赛拉公司 用于增强超音波治疗的功效的系统和方法
CA3137928A1 (en) 2019-07-15 2021-01-21 Ulthera, Inc. Systems and methods for measuring elasticity with imaging of ultrasound multi-focus shearwaves in multiple dimensions
US11725966B2 (en) * 2020-09-18 2023-08-15 Rosemount Inc. Multi-stage irreversible sensor coupling
US20240225859A1 (en) * 2023-01-10 2024-07-11 Kamil Podhola Bionic limb system
JP2025115838A (ja) * 2024-01-26 2025-08-07 株式会社D‐process バルク弾性波デバイス

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434255A (en) * 1948-01-13 Temperature compensated wave
US2430013A (en) * 1942-06-10 1947-11-04 Rca Corp Impedance matching means for mechanical waves
US3362501A (en) * 1966-09-15 1968-01-09 Magnaflux Corp Acoustic transmission section
US4016530A (en) * 1975-06-02 1977-04-05 Goll Jeffrey H Broadband electroacoustic converter
US3979565A (en) * 1975-08-11 1976-09-07 Westinghouse Electric Corporation Metal enclosed transducer assembly

Also Published As

Publication number Publication date
DE2746712A1 (de) 1978-04-20
CH620793A5 (de) 1980-12-15
US4166967A (en) 1979-09-04
DE2746712B2 (de) 1979-05-17
GB1577692A (en) 1980-10-29
JPS6217407B2 (de) 1987-04-17
AT353506B (de) 1979-11-26
JPS5350991A (en) 1978-05-09
DE2746712C3 (de) 1980-01-31

Similar Documents

Publication Publication Date Title
AT353506B (de) Piezoelektrischer resonator
NL183689C (nl) Piezo-electrische resonator.
FI763081A7 (fi) Diaram
FI773000A7 (fi) Givare
NL190593C (nl) Piëzo-elektrische resonator.
FR2325093A1 (fr) Microresonateur piezoelectrique
FR2282746A1 (fr) Resonateur piezoelectrique
SE405298B (sv) Laserresonator
FR2466899B1 (fr) Oscillateur piezoelectrique
BR7705732A (pt) Vibrador
NL7803734A (nl) Kwartsresonator.
DK143617C (da) Laasering
BE879590A (fr) Resonateur piezoelectrique
SE415534B (sv) Startstreng
BE887091A (fr) Resonateur piezo-electrique
FI53852C (fi) Fundament foer en skivkvarn
MX144739A (es) Conjunto resonador mejorado
SE7603627L (sv) Piezoelektriskt element
SE421728B (sv) Digistalstyrd oscillator
TR19768A (tr) Oksindol bilesikleri
FI780851A7 (fi) Kvartvaogsresonator
FR2339893A1 (fr) Vibreur piezo-electrique
BR7702336A (pt) Vibrador
DK83277A (da) Staniliseret oscillator
JPS5294181A (en) Piezoelectric oscillation pickkup

Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee