JPS5772498A - Bimorph type electrostrictive vibrator - Google Patents

Bimorph type electrostrictive vibrator

Info

Publication number
JPS5772498A
JPS5772498A JP14915280A JP14915280A JPS5772498A JP S5772498 A JPS5772498 A JP S5772498A JP 14915280 A JP14915280 A JP 14915280A JP 14915280 A JP14915280 A JP 14915280A JP S5772498 A JPS5772498 A JP S5772498A
Authority
JP
Japan
Prior art keywords
field
thickness
electrostrictive vibrator
bimorph type
intensity
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
JP14915280A
Other languages
Japanese (ja)
Other versions
JPS6347040B2 (en
Inventor
Fumio Sato
Shigeru Fujimura
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP14915280A priority Critical patent/JPS5772498A/en
Publication of JPS5772498A publication Critical patent/JPS5772498A/en
Publication of JPS6347040B2 publication Critical patent/JPS6347040B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To increase a mechanical variance and a mechanical energy considerably, by making the thickness of piezoelectric elements different in the forward side of the reverse side of polarization. CONSTITUTION:When the thickness of a piezoelectric element 11 is h1, the thickness of other piezoelectric element 12 is h2h1=nh2(0<n<1). IN this electrostrictive vibrator 13, when an electric field Ep due to a power source V is applied to the reverse part of the element 12, the intensity of the electric field applied to the forward part of the element 11 becomes Ep/n. Consequently, the field applied to the element 11 is very larger than the field Ep applied to the element 12. Cosequently, when n=1/4 is true for PZT of Ep=200V/mm., the intensity of the field applied to the forward part of the element 11 becomes E=800V/mm., and thus, the field is applied up to the limit of the dielectric breakdown.
JP14915280A 1980-10-23 1980-10-23 Bimorph type electrostrictive vibrator Granted JPS5772498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14915280A JPS5772498A (en) 1980-10-23 1980-10-23 Bimorph type electrostrictive vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14915280A JPS5772498A (en) 1980-10-23 1980-10-23 Bimorph type electrostrictive vibrator

Publications (2)

Publication Number Publication Date
JPS5772498A true JPS5772498A (en) 1982-05-06
JPS6347040B2 JPS6347040B2 (en) 1988-09-20

Family

ID=15468911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14915280A Granted JPS5772498A (en) 1980-10-23 1980-10-23 Bimorph type electrostrictive vibrator

Country Status (1)

Country Link
JP (1) JPS5772498A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931078A (en) * 1982-08-13 1984-02-18 Omron Tateisi Electronics Co Piezoelectric bimorph
JPS5963782A (en) * 1982-10-05 1984-04-11 Tohoku Metal Ind Ltd Piezoelectric bimorph element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931078A (en) * 1982-08-13 1984-02-18 Omron Tateisi Electronics Co Piezoelectric bimorph
JPS5963782A (en) * 1982-10-05 1984-04-11 Tohoku Metal Ind Ltd Piezoelectric bimorph element

Also Published As

Publication number Publication date
JPS6347040B2 (en) 1988-09-20

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