JPS56160198A - Electroacoustic transducer - Google Patents

Electroacoustic transducer

Info

Publication number
JPS56160198A
JPS56160198A JP6422680A JP6422680A JPS56160198A JP S56160198 A JPS56160198 A JP S56160198A JP 6422680 A JP6422680 A JP 6422680A JP 6422680 A JP6422680 A JP 6422680A JP S56160198 A JPS56160198 A JP S56160198A
Authority
JP
Japan
Prior art keywords
electric charge
piezoelectric
electrodes
resistance
accumulated
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
JP6422680A
Other languages
Japanese (ja)
Other versions
JPS5927559B2 (en
Inventor
Toshio Ogawa
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP55064226A priority Critical patent/JPS5927559B2/en
Priority to US06/169,219 priority patent/US4451753A/en
Priority to DE3027583A priority patent/DE3027583C2/en
Publication of JPS56160198A publication Critical patent/JPS56160198A/en
Publication of JPS5927559B2 publication Critical patent/JPS5927559B2/en
Expired 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 devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders; Supports
    • H03H9/10—Mounting in enclosures
    • H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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 devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02086—Means for compensation or elimination of undesirable effects
    • H03H9/02141—Means for compensation or elimination of undesirable effects of electric discharge due to pyroelectricity
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2047—Membrane type
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

PURPOSE:To ensure a stable piezoelectric property of a piezoelectric transducer to the temperature environment, by securing an electrical connection or the like between a conductive member at the side where the positive electric charge is accumulated and a conductive member at the side where the negative electric charge is accumulated. CONSTITUTION:For a piezoelectric buzzer 1, a piezoelectric substrate 3 is stuck concentrically on a surface of a metallic disk 2 with a support 4 secured on the other surface to ensure a flexion vibration. Electrodes 5 and 6 are provided to excite the substrate 3, and leads 7 and 8 are soldered to the electrodes 5 and 6 respectively. Then a discrete resistance 9 is connected between the leads 7 and 8. The resistance value of the resistance 9 must be set smaller than the resistance value between the electrodes 5 and 6. In such constitution, the alternate electric charge due to the electric charge caused by a pyroelectric effect can be reduced quickly to avoid a deterioration of the piezoelectric property.
JP55064226A 1979-07-20 1980-05-14 electroacoustic transformer Expired JPS5927559B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55064226A JPS5927559B2 (en) 1980-05-14 1980-05-14 electroacoustic transformer
US06/169,219 US4451753A (en) 1979-09-13 1980-07-15 Piezoelectric device with surface charge shunt
DE3027583A DE3027583C2 (en) 1979-07-20 1980-07-21 Piezoelectric component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55064226A JPS5927559B2 (en) 1980-05-14 1980-05-14 electroacoustic transformer

Publications (2)

Publication Number Publication Date
JPS56160198A true JPS56160198A (en) 1981-12-09
JPS5927559B2 JPS5927559B2 (en) 1984-07-06

Family

ID=13251973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55064226A Expired JPS5927559B2 (en) 1979-07-20 1980-05-14 electroacoustic transformer

Country Status (1)

Country Link
JP (1) JPS5927559B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7358653B2 (en) 2005-11-02 2008-04-15 Murata Manufacturing Co., Ltd. Piezoelectric element

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7915085B2 (en) 2003-09-18 2011-03-29 Cree, Inc. Molded chip fabrication method
US9070850B2 (en) 2007-10-31 2015-06-30 Cree, Inc. Light emitting diode package and method for fabricating same
US9711703B2 (en) 2007-02-12 2017-07-18 Cree Huizhou Opto Limited Apparatus, system and method for use in mounting electronic elements
US9041285B2 (en) 2007-12-14 2015-05-26 Cree, Inc. Phosphor distribution in LED lamps using centrifugal force
US10622522B2 (en) 2014-09-05 2020-04-14 Theodore Lowes LED packages with chips having insulated surfaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7358653B2 (en) 2005-11-02 2008-04-15 Murata Manufacturing Co., Ltd. Piezoelectric element

Also Published As

Publication number Publication date
JPS5927559B2 (en) 1984-07-06

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