JPS5412692A - Tuning fork type crystal oscillator for watch use - Google Patents

Tuning fork type crystal oscillator for watch use

Info

Publication number
JPS5412692A
JPS5412692A JP7721577A JP7721577A JPS5412692A JP S5412692 A JPS5412692 A JP S5412692A JP 7721577 A JP7721577 A JP 7721577A JP 7721577 A JP7721577 A JP 7721577A JP S5412692 A JPS5412692 A JP S5412692A
Authority
JP
Japan
Prior art keywords
crystal oscillator
tuning fork
type crystal
fork type
watch use
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
JP7721577A
Other languages
Japanese (ja)
Inventor
Makoto Wakasugi
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
Priority to JP7721577A priority Critical patent/JPS5412692A/en
Publication of JPS5412692A publication Critical patent/JPS5412692A/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 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
    • H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
    • H03H9/1021—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being of the cantilever type

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To obtain a tuning fork type crystal oscillator for watch use, which features a high accuracy, except under the special conditions, without deteriorating the time accuracy extremely in case the CR oscillation type frequency standard is applied.
JP7721577A 1977-06-30 1977-06-30 Tuning fork type crystal oscillator for watch use Pending JPS5412692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7721577A JPS5412692A (en) 1977-06-30 1977-06-30 Tuning fork type crystal oscillator for watch use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7721577A JPS5412692A (en) 1977-06-30 1977-06-30 Tuning fork type crystal oscillator for watch use

Publications (1)

Publication Number Publication Date
JPS5412692A true JPS5412692A (en) 1979-01-30

Family

ID=13627603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7721577A Pending JPS5412692A (en) 1977-06-30 1977-06-30 Tuning fork type crystal oscillator for watch use

Country Status (1)

Country Link
JP (1) JPS5412692A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63202112A (en) * 1987-02-17 1988-08-22 Seiko Electronic Components Ltd Coupling crystal vibrator
JPS63202113A (en) * 1987-02-17 1988-08-22 Seiko Electronic Components Ltd Coupling crystal vibrator
JPS63280507A (en) * 1987-05-12 1988-11-17 Seiko Electronic Components Ltd Coupling crystal resonator
JP2001203560A (en) * 2000-01-20 2001-07-27 Nippon Dempa Kogyo Co Ltd Tuning fork type quartz vibrator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63202112A (en) * 1987-02-17 1988-08-22 Seiko Electronic Components Ltd Coupling crystal vibrator
JPS63202113A (en) * 1987-02-17 1988-08-22 Seiko Electronic Components Ltd Coupling crystal vibrator
JPS63280507A (en) * 1987-05-12 1988-11-17 Seiko Electronic Components Ltd Coupling crystal resonator
JP2001203560A (en) * 2000-01-20 2001-07-27 Nippon Dempa Kogyo Co Ltd Tuning fork type quartz vibrator

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