GB8614940D0 - Acoustic transducer - Google Patents

Acoustic transducer

Info

Publication number
GB8614940D0
GB8614940D0 GB868614940A GB8614940A GB8614940D0 GB 8614940 D0 GB8614940 D0 GB 8614940D0 GB 868614940 A GB868614940 A GB 868614940A GB 8614940 A GB8614940 A GB 8614940A GB 8614940 D0 GB8614940 D0 GB 8614940D0
Authority
GB
United Kingdom
Prior art keywords
acoustic transducer
acoustic
transducer
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.)
Granted
Application number
GB868614940A
Other versions
GB2191909A (en
GB2191909B (en
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8614940A priority Critical patent/GB2191909B/en
Publication of GB8614940D0 publication Critical patent/GB8614940D0/en
Priority to EP87305474A priority patent/EP0251599A3/en
Publication of GB2191909A publication Critical patent/GB2191909A/en
Application granted granted Critical
Publication of GB2191909B publication Critical patent/GB2191909B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0688—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction with foil-type piezoelectric elements, e.g. PVDF
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
GB8614940A 1986-06-19 1986-06-19 Acoustic transducer Expired GB2191909B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8614940A GB2191909B (en) 1986-06-19 1986-06-19 Acoustic transducer
EP87305474A EP0251599A3 (en) 1986-06-19 1987-06-19 Acoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8614940A GB2191909B (en) 1986-06-19 1986-06-19 Acoustic transducer

Publications (3)

Publication Number Publication Date
GB8614940D0 true GB8614940D0 (en) 1986-10-29
GB2191909A GB2191909A (en) 1987-12-23
GB2191909B GB2191909B (en) 1989-12-20

Family

ID=10599709

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8614940A Expired GB2191909B (en) 1986-06-19 1986-06-19 Acoustic transducer

Country Status (2)

Country Link
EP (1) EP0251599A3 (en)
GB (1) GB2191909B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256111B (en) * 1991-04-11 1995-02-01 Univ Southampton Distributed sensors for active vibration control
CN2369412Y (en) * 1997-02-04 2000-03-15 焦秉立 Curved piezoelectric vibrator
GB2513044B (en) 2009-05-27 2015-04-22 Silixa Ltd Apparatus for monitoring seepage.
CN109005491B (en) * 2018-07-03 2023-06-13 惠州学院 MEMS matrix microphone for measuring travel environmental noise with golden spiral structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL81373C (en) * 1947-12-26
US3781955A (en) * 1970-12-21 1974-01-01 V Lavrinenko Method of making a piezoelectric element
DE3249770C2 (en) * 1982-11-05 1987-11-12 Martin Maelzer Device for testing electrical circuit boards
JPS60264200A (en) * 1984-06-13 1985-12-27 Shimada Phys & Chem Ind Co Ltd Ultrasonic wave vibrator
US4695988A (en) * 1984-09-12 1987-09-22 Ngk Spark Plug Co. Ltd. Underwater piezoelectric arrangement

Also Published As

Publication number Publication date
EP0251599A3 (en) 1989-04-26
GB2191909A (en) 1987-12-23
EP0251599A2 (en) 1988-01-07
GB2191909B (en) 1989-12-20

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940619