JPS56143718A - Tuning fork type quartz oscillator - Google Patents

Tuning fork type quartz oscillator

Info

Publication number
JPS56143718A
JPS56143718A JP4721880A JP4721880A JPS56143718A JP S56143718 A JPS56143718 A JP S56143718A JP 4721880 A JP4721880 A JP 4721880A JP 4721880 A JP4721880 A JP 4721880A JP S56143718 A JPS56143718 A JP S56143718A
Authority
JP
Japan
Prior art keywords
tuning fork
flectional
quartz oscillator
fork type
torsional
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
JP4721880A
Other languages
Japanese (ja)
Inventor
Hirofumi Kawashima
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP4721880A priority Critical patent/JPS56143718A/en
Publication of JPS56143718A publication Critical patent/JPS56143718A/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
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks
    • H03H9/215—Crystal tuning forks consisting of quartz

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To improve the coupling between oscillations in flectional and torsional modes by properly setting the width, length, etc., of tuning fork arms of a quartz oscillator which oscillates with flectional and torsional modes coupled mutually. CONSTITUTION:Tuning fork arms 1a and 1b of tuning fork type crystal 1 are provided with energizing electrodes 2-17. Then, applying an AC voltage between electrode terminals A and B energizes the tertiary higher harmonic oscillation in the flectional mode and oscillation in torsional mode. In addition, when the tuning fork arm width is denoted as W, the length as L and the thickness as T, setting W<2>/LT between 0.09 and 0.21 improves the coupling between the oscillations in both the modes.
JP4721880A 1980-04-10 1980-04-10 Tuning fork type quartz oscillator Pending JPS56143718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4721880A JPS56143718A (en) 1980-04-10 1980-04-10 Tuning fork type quartz oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4721880A JPS56143718A (en) 1980-04-10 1980-04-10 Tuning fork type quartz oscillator

Publications (1)

Publication Number Publication Date
JPS56143718A true JPS56143718A (en) 1981-11-09

Family

ID=12769025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4721880A Pending JPS56143718A (en) 1980-04-10 1980-04-10 Tuning fork type quartz oscillator

Country Status (1)

Country Link
JP (1) JPS56143718A (en)

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