JPS5577299A - Piezoelectric speaker - Google Patents

Piezoelectric speaker

Info

Publication number
JPS5577299A
JPS5577299A JP15150578A JP15150578A JPS5577299A JP S5577299 A JPS5577299 A JP S5577299A JP 15150578 A JP15150578 A JP 15150578A JP 15150578 A JP15150578 A JP 15150578A JP S5577299 A JPS5577299 A JP S5577299A
Authority
JP
Japan
Prior art keywords
piezoelectric
electrodes
piezoelectric bimorph
speaker
constitution
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.)
Pending
Application number
JP15150578A
Other languages
Japanese (ja)
Inventor
Sadao Yukimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15150578A priority Critical patent/JPS5577299A/en
Publication of JPS5577299A publication Critical patent/JPS5577299A/en
Pending 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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer

Landscapes

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

Abstract

PURPOSE:To make it possible to feed a current direct from a transistor amplifier without using an impedance matching box by forming a piezoelectric bimorph by combining multi-layer laminations, of high-molecular piezoelectric films with electrodes on both surfaces, to both surfaces of an interposing material. CONSTITUTION:Multi-layer laminations of high-molecular piezoelectric films 12 with electrodes 10 and 11 on both surfaces are made in one with interposing material 13 between the both and the polarization direction of each film 12 is made different alternately to constitute a piezoelectric bimorph. Then, electrodes 10 and 11 are applied with input signal respectively. In the center of the top surface of the piezoelectric bimorph of this constitution, a diaphragm is connected and the whole body is incorporated in a frame to obtain a piezoelectric speaker. This piezoelectric speaker is small in the impedance of the piezoelectric bimorph, which is close to that of a dynamic speaker, so that power can be fed from a transistor amplifier directly.
JP15150578A 1978-12-06 1978-12-06 Piezoelectric speaker Pending JPS5577299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15150578A JPS5577299A (en) 1978-12-06 1978-12-06 Piezoelectric speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15150578A JPS5577299A (en) 1978-12-06 1978-12-06 Piezoelectric speaker

Publications (1)

Publication Number Publication Date
JPS5577299A true JPS5577299A (en) 1980-06-10

Family

ID=15519968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15150578A Pending JPS5577299A (en) 1978-12-06 1978-12-06 Piezoelectric speaker

Country Status (1)

Country Link
JP (1) JPS5577299A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125499U (en) * 1982-02-18 1983-08-26 三洋電機株式会社 piezoelectric speaker
JPS62200900A (en) * 1986-02-27 1987-09-04 Sony Corp Piezoelectric sensor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125499U (en) * 1982-02-18 1983-08-26 三洋電機株式会社 piezoelectric speaker
JPS6230395Y2 (en) * 1982-02-18 1987-08-04
JPS62200900A (en) * 1986-02-27 1987-09-04 Sony Corp Piezoelectric sensor

Similar Documents

Publication Publication Date Title
ES462476A1 (en) Piezoelectric high polymer, multilayer electro-acoustic transducers
GB1033001A (en) Electroacoustic transducers
GB1365257A (en) Electroacoustic transducers and their manufacture
JPS56134807A (en) Acoustic reproducing device
GB1352407A (en) Electrostatic electroacoustic transducer
FR2397118A1 (en) ELECTRO-ACOUSTIC TRANSDUCER
GB1398172A (en) Support plate assemblies for electret transducers
ES8100591A1 (en) Transducer
JPS54133320A (en) Directivity changeable condenser microphone
JPS5577299A (en) Piezoelectric speaker
GB1234767A (en) Improvements in or relating to electro-acoustic transducers
JPS5376823A (en) Plane driving type speaker
GB1353098A (en) Electrostatic electroacoustic transducer
JPS5312319A (en) Mfb circuit
JPS5312321A (en) Mfb circuit
JPS5718021A (en) Driving device of piezoelectric element
GB1333644A (en) Noise making device
JPS55104149A (en) Sound wave receiver of variable curvature
JPS55121799A (en) Electroacoustic conversion element
JPS567594A (en) Voice coil for flat diaphragm type speaker
JPS5443015A (en) Production of diaphragm for dynamic electro-acoustic transducers
JPS5257818A (en) Electroacoustic transduction element
JPS5566198A (en) Pickup for stereo set
JPS5520015A (en) Piezoelectric device
JPS5789281A (en) Torsion mode piezoelectric transformer