GB1333644A - Noise making device - Google Patents

Noise making device

Info

Publication number
GB1333644A
GB1333644A GB3901771A GB3901771A GB1333644A GB 1333644 A GB1333644 A GB 1333644A GB 3901771 A GB3901771 A GB 3901771A GB 3901771 A GB3901771 A GB 3901771A GB 1333644 A GB1333644 A GB 1333644A
Authority
GB
United Kingdom
Prior art keywords
transducer
piezo
amplifier
electrode
crystal
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
GB3901771A
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.)
Duracell Inc USA
Original Assignee
PR Mallory and Co Inc
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 PR Mallory and Co Inc filed Critical PR Mallory and Co Inc
Publication of GB1333644A publication Critical patent/GB1333644A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
    • B06B1/0261—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken from a transducer or electrode connected to the driving transducer
    • 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
    • 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
    • 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
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1333644 Crystal controlled oscillators and piezoelectric devices P R MALLORY & CO Inc 19 Aug 1971 [20 Aug 1970] 39017/71 Headings H3T and H4J [Also in Division G4] A noise-making device (Fig. 3) includes a piezo-electric transducer (Fig. 2) having drive means (which is constituted by two electrodes 1, 2) and feedback means (which comprises an electrode 3) with no D.C. path between them, and an electrical circuit for energizing the transducer from an amplifier to which the feedback means is coupled by a feedback loop. The transducer embodies a piezo-electric element E including a piezo-electric crystal C bonded to a substrate 5. A narrow vacant strip M separates electrodes 1 and 3. Each electrode is constituted by a thin film of, e.g. silver. The crystal may be a lead-zirconiumtitanium composite. The use of the isolated feedback electrode permits the use of the collector-to-emitter saturation characteristics of a transistor of the amplifier, so as to drive the transducer at higher voltages than normally obtained. The double-transistor amplifier can be replaced by one using a single transistor (Fig. 4, not shown). The substrate may be of brass.
GB3901771A 1970-08-20 1971-08-19 Noise making device Expired GB1333644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6562270A 1970-08-20 1970-08-20

Publications (1)

Publication Number Publication Date
GB1333644A true GB1333644A (en) 1973-10-10

Family

ID=22063989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3901771A Expired GB1333644A (en) 1970-08-20 1971-08-19 Noise making device

Country Status (3)

Country Link
CA (1) CA930211A (en)
DE (1) DE2141643C3 (en)
GB (1) GB1333644A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195284A (en) * 1976-08-11 1980-03-25 Ward & Goldstone Limited Sound generator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778672A (en) * 1972-07-27 1973-12-11 Ponder & Best Audible alert signal for an electronic flash unit
CA1006969A (en) * 1973-07-26 1977-03-15 Lyle E. Shoot Piezoelectric transducer
DE3013788C2 (en) * 1980-04-10 1982-11-25 Siemens AG, 1000 Berlin und 8000 München Piezoceramic disc for a signal generator to generate an acoustic signal
DE3833234C2 (en) * 1988-09-30 1995-03-16 Wolfgang Kessler Procedure for calibrating or testing a piezoceramic transducer
DE102017006181A1 (en) * 2017-06-29 2019-01-03 Diehl Metering Gmbh Measuring device and method for determining a fluid size

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195284A (en) * 1976-08-11 1980-03-25 Ward & Goldstone Limited Sound generator

Also Published As

Publication number Publication date
DE2141643C3 (en) 1978-08-24
DE2141643A1 (en) 1972-03-23
DE2141643B2 (en) 1978-01-12
CA930211A (en) 1973-07-17

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years