JPS56143716A - Electrode structure of tuning fork type quartz oscillator - Google Patents

Electrode structure of tuning fork type quartz oscillator

Info

Publication number
JPS56143716A
JPS56143716A JP4721780A JP4721780A JPS56143716A JP S56143716 A JPS56143716 A JP S56143716A JP 4721780 A JP4721780 A JP 4721780A JP 4721780 A JP4721780 A JP 4721780A JP S56143716 A JPS56143716 A JP S56143716A
Authority
JP
Japan
Prior art keywords
tuning fork
electrodes
oscillation
electrode
quartz oscillator
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
JP4721780A
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 JP4721780A priority Critical patent/JPS56143716A/en
Publication of JPS56143716A publication Critical patent/JPS56143716A/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 reduce crystal impedance in torsional mode, by connecting the surface electrode of one tuning fork arm to the flank electrode of the other tuning fork arm and the surface electrode of the other tuning fork arm to the flank electrode of the other tuning fork arm. CONSTITUTION:Tuning fork arms 2 and 3 of quartz oscillator 1 are provided with surface electrodes 2a and 3a, flank electrodes 2b and 3b, and 2c and 3c, and reverse electrodes (earth electrode) 2e and 3e. Then, applying an AC voltage between electrodes E and F generates flectional mode oscillation and torsional mode oscillation simultaneously. When said electrodes are arranged, the flectional mode oscillation as main oscillation and torsional mode oscillation as subordinate oscillation get easier to couple with each other and the crystal impedance of the torsional mode oscillation can be reduced.
JP4721780A 1980-04-10 1980-04-10 Electrode structure of tuning fork type quartz oscillator Pending JPS56143716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4721780A JPS56143716A (en) 1980-04-10 1980-04-10 Electrode structure of tuning fork type quartz oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4721780A JPS56143716A (en) 1980-04-10 1980-04-10 Electrode structure of tuning fork type quartz oscillator

Publications (1)

Publication Number Publication Date
JPS56143716A true JPS56143716A (en) 1981-11-09

Family

ID=12768993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4721780A Pending JPS56143716A (en) 1980-04-10 1980-04-10 Electrode structure of tuning fork type quartz oscillator

Country Status (1)

Country Link
JP (1) JPS56143716A (en)

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