JPS57185799A - Piezoelectric transducer - Google Patents

Piezoelectric transducer

Info

Publication number
JPS57185799A
JPS57185799A JP7091981A JP7091981A JPS57185799A JP S57185799 A JPS57185799 A JP S57185799A JP 7091981 A JP7091981 A JP 7091981A JP 7091981 A JP7091981 A JP 7091981A JP S57185799 A JPS57185799 A JP S57185799A
Authority
JP
Japan
Prior art keywords
temperature
piezoelectric film
projections
pressure level
sound pressure
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
JP7091981A
Other languages
Japanese (ja)
Other versions
JPS6019681B2 (en
Inventor
Shuhei Konishi
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 JP7091981A priority Critical patent/JPS6019681B2/en
Publication of JPS57185799A publication Critical patent/JPS57185799A/en
Publication of JPS6019681B2 publication Critical patent/JPS6019681B2/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

Landscapes

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

Abstract

PURPOSE:To obtain small sized device in comparison with a temperature correction by a conventional oscillated output voltage circuit, by stabilizing an output sound pressure level from a low to high tone, through the setting of one set of a constant temperature heater such as a positive characteristic thermister. CONSTITUTION:Sound dissipating holes 9 are formed on a case 6 made of a synthetic resin and a film sticking base 10 formed in semi-cylindrical shape is placed. Projections 11 and 12 are provided at the inside of the base 10 and both ends of a piezoelectric film 13 are bonded with the projections. Terminals 14 and 15 are connected to electrodes on both sides of the piezoelectric film 13. A constant temperature heater 16 such as a positive characteristic thermister is located on the upper side of the case 6. Thus, the temperature can be kept constant even to the change in environmental temperature and the piezoelectric film 13 is heated, allowing to prevent the reduction in the sound pressure level even at a low temperature.
JP7091981A 1981-05-12 1981-05-12 piezoelectric transducer Expired JPS6019681B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7091981A JPS6019681B2 (en) 1981-05-12 1981-05-12 piezoelectric transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7091981A JPS6019681B2 (en) 1981-05-12 1981-05-12 piezoelectric transducer

Publications (2)

Publication Number Publication Date
JPS57185799A true JPS57185799A (en) 1982-11-16
JPS6019681B2 JPS6019681B2 (en) 1985-05-17

Family

ID=13445387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7091981A Expired JPS6019681B2 (en) 1981-05-12 1981-05-12 piezoelectric transducer

Country Status (1)

Country Link
JP (1) JPS6019681B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006300580A (en) * 2005-04-18 2006-11-02 National Institute Of Advanced Industrial & Technology Internal pressure sensor for piping

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006300580A (en) * 2005-04-18 2006-11-02 National Institute Of Advanced Industrial & Technology Internal pressure sensor for piping

Also Published As

Publication number Publication date
JPS6019681B2 (en) 1985-05-17

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