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GB914558A - Improvements in or relating to piezo-electric transducers for recording and reproduction - Google Patents

Improvements in or relating to piezo-electric transducers for recording and reproduction

Info

Publication number
GB914558A
GB914558A GB14978/59A GB1497859A GB914558A GB 914558 A GB914558 A GB 914558A GB 14978/59 A GB14978/59 A GB 14978/59A GB 1497859 A GB1497859 A GB 1497859A GB 914558 A GB914558 A GB 914558A
Authority
GB
United Kingdom
Prior art keywords
piezo
elements
electrodes
axis
rod
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
GB14978/59A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB914558A publication Critical patent/GB914558A/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
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Gyroscopes (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

914,558. Stereophonic recording and reproducing apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 1, 1959 [May 5, 1958], No. 14978/59. Class 40 (4). [Also in Group XL (b)] A piezo-electric element comprises a rod built up of at least two elements each having a piezo-electric axis normal to electrodes on opposite faces and normal to the axis of the other element. In Fig. 1, square sectioned rods 3 and 4 have outer electrodes 7 and 9 and an interleaved electrode 8, while to one side of the pile is secured a flat rod 2 with electrodes 5 and 6. Voltages on terminals X and Y indicate or produce horizontal and vertical components of bending. In Fig. 3 the element 2 is replaced by two side-by-side square sectioned elements of opposite polarization while the elements 12 and 13 are also oppositely polarized to double the sensitivity of the transducer. The element may be mounted at one end and in the middle while carrying a stylus arm at the other end, the stylus lying on the axis of the rod.
GB14978/59A 1958-03-20 1959-05-01 Improvements in or relating to piezo-electric transducers for recording and reproduction Expired GB914558A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL226065 1958-03-20
NL227532 1958-05-05

Publications (1)

Publication Number Publication Date
GB914558A true GB914558A (en) 1963-01-02

Family

ID=26641642

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14978/59A Expired GB914558A (en) 1958-03-20 1959-05-01 Improvements in or relating to piezo-electric transducers for recording and reproduction

Country Status (7)

Country Link
US (2) US3213207A (en)
BE (1) BE578379R (en)
CH (2) CH375921A (en)
DE (1) DE1164698B (en)
FR (1) FR1222046A (en)
GB (1) GB914558A (en)
NL (3) NL113247C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH411121A (en) * 1962-12-19 1966-04-15 Ceskoslovenska Akademie Ved Voltage stabilizer
US3537039A (en) * 1968-08-26 1970-10-27 Motorola Inc Variable piezoelectric delay line
US3562563A (en) * 1969-03-26 1971-02-09 Motorola Inc Circumferentially slotted tubular piezoelectric transformer
US4348609A (en) * 1979-04-20 1982-09-07 Murata Manufacturing Co., Ltd. Piezoelectric vibrator with spurious mode suppression
US5225731A (en) * 1991-06-13 1993-07-06 Southwest Research Institute Solid body piezoelectric bender transducer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE590996C (en) * 1932-07-20 1934-01-15 Neufeldt & Kuhnke G M B H Piezoelectric crystal structure for sound recording and reproduction devices
US2439499A (en) * 1942-08-20 1948-04-13 Brush Dev Co Piezoelectric motor
US2444590A (en) * 1944-09-07 1948-07-06 Brush Dev Co Crystal plate and method of fabricating same
NL86929C (en) * 1948-06-12
US2775460A (en) * 1951-05-15 1956-12-25 Ian M Shivack Binaural recording system
US2858373A (en) * 1952-07-18 1958-10-28 Hans E Hollmann Highly sensitive transducers with electromechanical feedback
US2928069A (en) * 1954-10-13 1960-03-08 Gulton Ind Inc Transducer
US2834158A (en) * 1955-01-28 1958-05-13 Gulton Ind Inc Ultrasonic drill
US2880334A (en) * 1955-06-13 1959-03-31 Bell Telephone Labor Inc Ferroelectric torsional transducer
US2944117A (en) * 1955-06-20 1960-07-05 Erie Resistor Corp Bender type piezoelectric transducer
NL106293C (en) * 1957-11-13

Also Published As

Publication number Publication date
BE578379R (en) 1959-11-04
US3213207A (en) 1965-10-19
DE1164698B (en) 1964-03-05
NL227532A (en)
CH375921A (en) 1964-03-15
NL226065A (en)
CH385505A (en) 1964-12-15
NL113247C (en)
US3046360A (en) 1962-07-24
FR1222046A (en) 1960-06-07

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