GB2020898B - Piezoelectric vibrator - Google Patents

Piezoelectric vibrator

Info

Publication number
GB2020898B
GB2020898B GB7911962A GB7911962A GB2020898B GB 2020898 B GB2020898 B GB 2020898B GB 7911962 A GB7911962 A GB 7911962A GB 7911962 A GB7911962 A GB 7911962A GB 2020898 B GB2020898 B GB 2020898B
Authority
GB
United Kingdom
Prior art keywords
piezoelectric vibrator
vibrator
piezoelectric
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.)
Expired
Application number
GB7911962A
Other versions
GB2020898A (en
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Publication of GB2020898A publication Critical patent/GB2020898A/en
Application granted granted Critical
Publication of GB2020898B publication Critical patent/GB2020898B/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
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks
    • H03H9/215—Crystal tuning forks consisting of quartz
    • 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
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
    • H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
    • 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
    • H03H9/177—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator of the energy-trap type
    • 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
    • H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
    • 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
    • H03H9/56—Monolithic crystal filters
    • 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
    • H03H9/56—Monolithic crystal filters
    • H03H9/566—Electric coupling means therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
GB7911962A 1978-04-05 1979-04-05 Piezoelectric vibrator Expired GB2020898B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3996478A JPS54131894A (en) 1978-04-05 1978-04-05 Piezoelectric oscillator

Publications (2)

Publication Number Publication Date
GB2020898A GB2020898A (en) 1979-11-21
GB2020898B true GB2020898B (en) 1982-12-22

Family

ID=12567635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7911962A Expired GB2020898B (en) 1978-04-05 1979-04-05 Piezoelectric vibrator

Country Status (3)

Country Link
JP (1) JPS54131894A (en)
DE (1) DE2913798A1 (en)
GB (1) GB2020898B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112017A (en) * 1979-02-20 1980-08-29 Seiko Epson Corp Electrode of tuning fork type crystal oscillator
FR2464595A1 (en) * 1979-08-31 1981-03-06 Ebauches Sa METHOD FOR DETECTING THE ASYMMETRY OF DIAPASON-SHAPED PIEZOELECTRIC CRYSTAL RESONATORS AND RESONATORS FOR ITS IMPLEMENTATION
US4376919A (en) * 1979-10-16 1983-03-15 Seikosha Co., Ltd. Circuitry for switching effective electrode area on a crystal in a crystal oscillator to vary the oscillation frequency
CH655224GA3 (en) * 1984-04-06 1986-04-15
JPH0666630B2 (en) * 1984-09-06 1994-08-24 日本電気株式会社 Energy trapped oscillator
JPS6179316A (en) * 1984-09-27 1986-04-22 Nippon Dempa Kogyo Co Ltd Piezo-electric vibrator
WO1986006228A1 (en) * 1985-04-11 1986-10-23 Toyo Communication Equipment Co., Ltd. Piezo-electric resonator for generating overtones
JP2813996B2 (en) * 1989-11-30 1998-10-22 セイコープレシジョン株式会社 3rd overtone AT-cut crystal unit
US5311096A (en) * 1991-01-25 1994-05-10 Seiko Electronic Components Ltd. KT cut width-extensional mode quartz crystal resonator
JP2004056601A (en) * 2002-07-22 2004-02-19 Toyo Commun Equip Co Ltd Piezoelectric vibrator and its manufacturing method

Also Published As

Publication number Publication date
DE2913798A1 (en) 1979-10-11
JPS54131894A (en) 1979-10-13
GB2020898A (en) 1979-11-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950405