GB1370164A - Piezoelectric transducer - Google Patents

Piezoelectric transducer

Info

Publication number
GB1370164A
GB1370164A GB1131172A GB1131172A GB1370164A GB 1370164 A GB1370164 A GB 1370164A GB 1131172 A GB1131172 A GB 1131172A GB 1131172 A GB1131172 A GB 1131172A GB 1370164 A GB1370164 A GB 1370164A
Authority
GB
United Kingdom
Prior art keywords
piezo
board
frequencies
electric
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.)
Expired
Application number
GB1131172A
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB1131172A priority Critical patent/GB1370164A/en
Priority to DE19732310582 priority patent/DE2310582A1/en
Priority to AU52976/73A priority patent/AU467181B2/en
Priority to CA165,448A priority patent/CA997055A/en
Priority to JP2627273A priority patent/JPS48103258A/ja
Priority to IT4865173A priority patent/IT979752B/en
Priority to ES73412456A priority patent/ES412456A1/en
Priority to FR7308293A priority patent/FR2175812B1/fr
Publication of GB1370164A publication Critical patent/GB1370164A/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
    • B06B1/0644—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 using a single piezoelectric element
    • B06B1/0651—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 using a single piezoelectric element of circular shape
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Filters And Equalizers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

1370164 Piezo-electric transducers; transistor oscillator circuits MULLARD Ltd 30 Jan 1973 [10 March 1972] 11311/72 Headings H4J and H3T [Also in Divisions H1 and G4] A piezo-electric tranducer comprises a board 4 of insulating material, e.g. fibre glass and having conducting layers 5a, 5b e.g. of copper, to which is attached a transducer element 1 having electrodes 2, 3 so as to produce a device which resonates at one or more particular frequencies. The piezo-electric material 1 may be a lead zirconate titanate ceramic and the electrode 2 (Fig. 1) or 2 and 3 (Fig. 2) may be soldered to the conducting layers 5a or 5a and 5b or may be glued thereto using an epoxy resin or cyanoacrylate and taking sufficient care to bring the surfaces together so as to produce an electrical contact. The piezo-electric element may be constructed as a feedlock element (Fig. 2) as is known in the art. Such a transducer may form the sound transmitter of a warning device and may be incor- porated in an oscillator circuit (Fig. 5a) which is switched between two frequencies, e.g. 2À3 KHz and 3À9 KHz corresponding to natural resonant frequencies of the board 4. To achieve two such natural resonant frequencies, the board may be rectangular or the resonant board may be divided into two or more sections driven by a common piezo-electric disc, e.g. by the use of suitably located slots, such that each section acts as a resonant plate. By arranging the two or more resonant frequencies to be close together a bandpass-type response may be achieved. The board 4 may be a printed circuit and the components of the oscillator and multivibrator can then be mounted on the boards at points of null vibration (Fig. 6, not shown). Alternatively the transducer may form an extension of a P.C.B. on which the components are mounted and being joined thereto by two necks which carry conductive layers extending from layers 5a, 5b. The transducer may be used at ultrasonic frequencies and may form a transmitter or receiver.
GB1131172A 1972-01-30 1972-01-30 Piezoelectric transducer Expired GB1370164A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB1131172A GB1370164A (en) 1972-01-30 1972-01-30 Piezoelectric transducer
DE19732310582 DE2310582A1 (en) 1972-01-30 1973-03-02 PIEZOELECTRIC CONVERTER
AU52976/73A AU467181B2 (en) 1972-03-10 1973-03-06 Piezoelectric transducer
CA165,448A CA997055A (en) 1972-01-30 1973-03-07 Piezoelectric transducer
JP2627273A JPS48103258A (en) 1972-01-30 1973-03-07
IT4865173A IT979752B (en) 1972-01-30 1973-03-07 PIEZOELECTRIC TRANSDUCER
ES73412456A ES412456A1 (en) 1972-01-30 1973-03-08 Piezoelectric transducer
FR7308293A FR2175812B1 (en) 1972-01-30 1973-03-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1131172A GB1370164A (en) 1972-01-30 1972-01-30 Piezoelectric transducer

Publications (1)

Publication Number Publication Date
GB1370164A true GB1370164A (en) 1974-10-16

Family

ID=9983923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1131172A Expired GB1370164A (en) 1972-01-30 1972-01-30 Piezoelectric transducer

Country Status (7)

Country Link
JP (1) JPS48103258A (en)
CA (1) CA997055A (en)
DE (1) DE2310582A1 (en)
ES (1) ES412456A1 (en)
FR (1) FR2175812B1 (en)
GB (1) GB1370164A (en)
IT (1) IT979752B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025955A1 (en) * 1979-09-19 1981-04-01 Siemens Aktiengesellschaft Piezo-electric ringing transducer
US6069433A (en) * 1994-01-27 2000-05-30 Active Control Experts, Inc. Packaged strain actuator
US6404107B1 (en) 1994-01-27 2002-06-11 Active Control Experts, Inc. Packaged strain actuator
US6791098B2 (en) 1994-01-27 2004-09-14 Cymer, Inc. Multi-input, multi-output motion control for lithography system
US6959484B1 (en) 1994-01-27 2005-11-01 Cymer, Inc. System for vibration control
WO2013117437A1 (en) * 2012-02-09 2013-08-15 Robert Bosch Gmbh Sound transducer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1087004A (en) * 1976-08-11 1980-10-07 Michael J. Hampshire Sound generator
US4401089A (en) * 1981-02-09 1983-08-30 Midas International Corporation Ultrasonic transducer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3423543A (en) * 1965-06-24 1969-01-21 Harry W Kompanek Loudspeaker with piezoelectric wafer driving elements
US3761956A (en) * 1970-10-01 1973-09-25 Nittan Co Ltd Sound generating device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025955A1 (en) * 1979-09-19 1981-04-01 Siemens Aktiengesellschaft Piezo-electric ringing transducer
US6069433A (en) * 1994-01-27 2000-05-30 Active Control Experts, Inc. Packaged strain actuator
US6404107B1 (en) 1994-01-27 2002-06-11 Active Control Experts, Inc. Packaged strain actuator
US6420819B1 (en) 1994-01-27 2002-07-16 Active Control Experts, Inc. Packaged strain actuator
US6791098B2 (en) 1994-01-27 2004-09-14 Cymer, Inc. Multi-input, multi-output motion control for lithography system
US6959484B1 (en) 1994-01-27 2005-11-01 Cymer, Inc. System for vibration control
WO2013117437A1 (en) * 2012-02-09 2013-08-15 Robert Bosch Gmbh Sound transducer

Also Published As

Publication number Publication date
ES412456A1 (en) 1976-01-01
DE2310582A1 (en) 1973-09-13
FR2175812B1 (en) 1976-05-21
FR2175812A1 (en) 1973-10-26
IT979752B (en) 1974-09-30
CA997055A (en) 1976-09-14
JPS48103258A (en) 1973-12-25
AU5297673A (en) 1974-09-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee