GB919282A - Transducer - Google Patents

Transducer

Info

Publication number
GB919282A
GB919282A GB16401/59A GB1640159A GB919282A GB 919282 A GB919282 A GB 919282A GB 16401/59 A GB16401/59 A GB 16401/59A GB 1640159 A GB1640159 A GB 1640159A GB 919282 A GB919282 A GB 919282A
Authority
GB
United Kingdom
Prior art keywords
horn
bridge
magneto
strictive
mechanical resonance
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
GB16401/59A
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio Corp
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 Zenith Radio Corp filed Critical Zenith Radio Corp
Publication of GB919282A publication Critical patent/GB919282A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching
    • 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
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S181/00—Acoustics
    • Y10S181/40—Wave coupling

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

919,282. Horns and resonators. ZENITH RADIO CORPORATION. May 13, 1959 [May 15, 1958], No. 16401/59. Class 13. [Also in Groups XXXIX and XL (b)] To obtain better coupling with air a transducer, worked at mechanical resonance to transmit or receive a signal frequency, has a structure attached to it with the same frequency of mechanical resonance and such as to provide a greater amplitude of vibration. The invention is applied to a magneto-strictive transmitter and to a piezo-electric receiver. The resonant structure may be a metal bridge 20 soldered to one side of a crystal bimorph 11, 12, Fig. 6; the legs 21 of the bridge straddling the direction in which the bimorph bends. The structure may alternatively comprise a closed cylinder, Fig. 11a; a bridge with cantilever arms 12a; or a disc mounted on a post, Fig. 13a. Any of these structures may be attached to the end of a centre-mounted magneto-strictive rod; Fig. 14 (not shown). More than one structure may be mounted side-by-side on a piezoelectric crystal, Fig. 10, each structure cooperating with a quarter wavelength aperture 46 communicating with the throat of a horn. The horn is shown in section at 45 in Fig. 1 and is of rectangular cross-section with the width of its orifice half its height to give a wide angle for lateral reception. The horn may be exponential. Specifications 867,764 and 867,765 are referred to.
GB16401/59A 1958-05-15 1959-05-13 Transducer Expired GB919282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US735548A US3058539A (en) 1958-05-15 1958-05-15 Transducer with impedance-matching bridge

Publications (1)

Publication Number Publication Date
GB919282A true GB919282A (en) 1963-02-20

Family

ID=24956234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16401/59A Expired GB919282A (en) 1958-05-15 1959-05-13 Transducer

Country Status (3)

Country Link
US (1) US3058539A (en)
DE (1) DE1167076B (en)
GB (1) GB919282A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122664A (en) * 1958-11-21 1964-02-25 Geophysique Cie Gle Electrical generator of mechanical vibrations
US3253674A (en) * 1961-09-11 1966-05-31 Zenith Radio Corp Ceramic microphone
US3331970A (en) * 1964-09-29 1967-07-18 Honeywell Inc Sonic transducer
US3360071A (en) * 1965-08-02 1967-12-26 Chromalloy Corp Acoustical coupler
US3510698A (en) * 1967-04-17 1970-05-05 Dynamics Corp America Electroacoustical transducer
US3531982A (en) * 1968-03-26 1970-10-06 Nasa Apparatus for the determination of the existence or non-existence of a bonding between two members
US4228379A (en) * 1978-08-28 1980-10-14 American District Telegraph Company Diaphragm type piezoelectric electroacoustic transducer
US4260928A (en) * 1978-11-09 1981-04-07 General Electric Company Electro-acoustic transducer with horn and reflector
US4607186A (en) * 1981-11-17 1986-08-19 Matsushita Electric Industrial Co. Ltd. Ultrasonic transducer with a piezoelectric element
DE102008056127A1 (en) * 2008-11-06 2010-06-10 Albert-Ludwigs-Universität Freiburg Electromechanical energy converter for generating electrical energy from mechanical movements

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168809A (en) * 1935-08-05 1939-08-08 Jr Charles E Semple Piezoelectric device
US2242755A (en) * 1939-02-11 1941-05-20 Bell Telephone Labor Inc Acoustic device
US2592703A (en) * 1947-04-09 1952-04-15 Brush Dev Co Transducing device having an electromechanically responsive dielectric element
US2487962A (en) * 1947-08-29 1949-11-15 Brush Dev Co Electromechanical transducer
US2567407A (en) * 1948-04-23 1951-09-11 Stromberg Carlson Co Electroacoustic transducer
AT176291B (en) * 1948-10-01 1953-10-10 Elektrowerke Scillo Appbau Gmb Quartz ultrasonic emitter
US2651148A (en) * 1949-11-23 1953-09-08 Raytheon Mfg Co Ultrasonic vibratory device
DE829818C (en) * 1950-05-06 1952-01-28 Atlas Werke Ag Device for sending or receiving sound waves
US2573168A (en) * 1950-05-23 1951-10-30 Bell Telephone Labor Inc Mechanical impedance transformer
US2748298A (en) * 1951-03-15 1956-05-29 Raytheon Mfg Co Ultrasonic vibratory devices
FR1163572A (en) * 1956-12-21 1958-09-29 Realisations Ultrasoniques Sa Improvements to ultrasonic machining machines
DE1166900B (en) * 1957-01-02 1964-04-02 Zenith Radio Corp Arrangement for controlling an electrical device with the aid of ultrasonic vibrations converted into electrical signals

Also Published As

Publication number Publication date
DE1167076B (en) 1964-04-02
US3058539A (en) 1962-10-16

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