JPS5555612A - Torsion oscillator - Google Patents

Torsion oscillator

Info

Publication number
JPS5555612A
JPS5555612A JP12872578A JP12872578A JPS5555612A JP S5555612 A JPS5555612 A JP S5555612A JP 12872578 A JP12872578 A JP 12872578A JP 12872578 A JP12872578 A JP 12872578A JP S5555612 A JPS5555612 A JP S5555612A
Authority
JP
Japan
Prior art keywords
axis
alpo4
equation
taking
frequency
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
JP12872578A
Other languages
Japanese (ja)
Other versions
JPS6246083B2 (en
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 JP12872578A priority Critical patent/JPS5555612A/en
Publication of JPS5555612A publication Critical patent/JPS5555612A/en
Publication of JPS6246083B2 publication Critical patent/JPS6246083B2/ja
Granted 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

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 obtain the oscillator excellent in the frequency temperature characteristics, by the cut angle in which the first order temperature coefficient of the resonant frequency is zero, in forming the diapason type torsion oscillator through the revolution of Y plate of AlPO4 by taking the X axis as the rotation axis. CONSTITUTION:The Y plate of AlPO4 is turned by theta deg. by taking the X axis as the turning axis to form the diapason type torsion oscillator 2. Taking the wrist width, thickness and length of arm as a, b, c respectively, the resonant frequency f is expressed in equation (1), and when equation (2) shows the first order temperature coefficient of the resonance frequency from the differentiation of equation (1), where S'55 is the elastic compliance of coordinate turning, phi is the density of AlPO4, I=1+(b/a)<2>, S=b/a, and Q is the term of correction which is the function of S'55S'66. Further, as the cut angle having zero temperature coefficient theoretically, 33...42 deg. or 108...117 deg. are obtained to form the torsion oscillator excellent in frequency versus temperature characteristics.
JP12872578A 1978-10-19 1978-10-19 Torsion oscillator Granted JPS5555612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12872578A JPS5555612A (en) 1978-10-19 1978-10-19 Torsion oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12872578A JPS5555612A (en) 1978-10-19 1978-10-19 Torsion oscillator

Publications (2)

Publication Number Publication Date
JPS5555612A true JPS5555612A (en) 1980-04-23
JPS6246083B2 JPS6246083B2 (en) 1987-09-30

Family

ID=14991892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12872578A Granted JPS5555612A (en) 1978-10-19 1978-10-19 Torsion oscillator

Country Status (1)

Country Link
JP (1) JPS5555612A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63103376U (en) * 1986-12-20 1988-07-05

Also Published As

Publication number Publication date
JPS6246083B2 (en) 1987-09-30

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