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JPS57174918A - Piezoelectric oscillator - Google Patents

Piezoelectric oscillator

Info

Publication number
JPS57174918A
JPS57174918A JP5936181A JP5936181A JPS57174918A JP S57174918 A JPS57174918 A JP S57174918A JP 5936181 A JP5936181 A JP 5936181A JP 5936181 A JP5936181 A JP 5936181A JP S57174918 A JPS57174918 A JP S57174918A
Authority
JP
Japan
Prior art keywords
piezoelectric ceramics
piezoelectric
piezoelectric oscillator
temperature characteristic
positive temperature
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
JP5936181A
Other languages
Japanese (ja)
Inventor
Isokazu Furukawa
Sadao Kakefu
Tamio Ohori
Tatsuya Furukawa
Michio Umezawa
Osamu Naruse
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP5936181A priority Critical patent/JPS57174918A/en
Publication of JPS57174918A publication Critical patent/JPS57174918A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02086—Means for compensation or elimination of undesirable effects
    • H03H9/02102—Means for compensation or elimination of undesirable effects of temperature influence
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/176—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of ceramic material

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To prevent the deterioration due to temperature of a piezoelectric ceramics, by constituting a positive temperature characteristic resistor and the piezoelectric ceramics in one body. CONSTITUTION:In constituting a piezoelectric oscillator in discoid shape, a piezoelectric ceramics 1 is provided at the external circumference and a positive temperature characteristic thermistor 2 is provided at the center, and electrodes are provided on the surface of the piezoelectric oscillator by coating or vapor deposition. When the temperature of the piezoelectric ceramics is risen and reaches a specified temperature during the oscillation of the piezoelectric oscillator, the resistance value of the positive temperature characteristic resistor is increased, and the excited power is reduced, allowing to suppress the self-generation of the piezoelectric ceramics.
JP5936181A 1981-04-20 1981-04-20 Piezoelectric oscillator Pending JPS57174918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5936181A JPS57174918A (en) 1981-04-20 1981-04-20 Piezoelectric oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5936181A JPS57174918A (en) 1981-04-20 1981-04-20 Piezoelectric oscillator

Publications (1)

Publication Number Publication Date
JPS57174918A true JPS57174918A (en) 1982-10-27

Family

ID=13111045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5936181A Pending JPS57174918A (en) 1981-04-20 1981-04-20 Piezoelectric oscillator

Country Status (1)

Country Link
JP (1) JPS57174918A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756875A2 (en) * 1995-08-03 1997-02-05 Miat S.P.A. Ultrasonic aerosol apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756875A2 (en) * 1995-08-03 1997-02-05 Miat S.P.A. Ultrasonic aerosol apparatus
EP0756875A3 (en) * 1995-08-03 1998-10-21 Miat S.P.A. Ultrasonic aerosol apparatus

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