JPS5520077A - Composite tuning fork type piezoelectric oscilator - Google Patents

Composite tuning fork type piezoelectric oscilator

Info

Publication number
JPS5520077A
JPS5520077A JP9375478A JP9375478A JPS5520077A JP S5520077 A JPS5520077 A JP S5520077A JP 9375478 A JP9375478 A JP 9375478A JP 9375478 A JP9375478 A JP 9375478A JP S5520077 A JPS5520077 A JP S5520077A
Authority
JP
Japan
Prior art keywords
temperature
frequency
tuning fork
crystal
type 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.)
Pending
Application number
JP9375478A
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 JP9375478A priority Critical patent/JPS5520077A/en
Publication of JPS5520077A publication Critical patent/JPS5520077A/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

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 frequency-temperature characteristics by using different kinds of materials to the arms of the tuning fork. CONSTITUTION:Different kinds of fork arms, such as crystal fork arm 1 and lithium tantalate fork arm 2, are jointed together at junction part 3. In this case, the frequency-temperature characteristics features the composition of the crystal and lithium tantalate cantilevers. Now the secondary temperature coefficients of the crystal and lithium tantalate are defined as a2 and b2 plus the primary temperature coefficients as a1 and a2 each. Thus the frequency change to the temperature of the composite oscillator has no relation with the temperature when a1+a2=0 and b1+b2=0 are satisfied. But it is actually difficult to reduce the sum of the temperature coefficients of both materials down to 0, and an extremely small value of the sum can be realized. As a result, the frequency-temperature characteristics can be enhanced for the tuning fork type piezoelectric oscillator.
JP9375478A 1978-08-01 1978-08-01 Composite tuning fork type piezoelectric oscilator Pending JPS5520077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9375478A JPS5520077A (en) 1978-08-01 1978-08-01 Composite tuning fork type piezoelectric oscilator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9375478A JPS5520077A (en) 1978-08-01 1978-08-01 Composite tuning fork type piezoelectric oscilator

Publications (1)

Publication Number Publication Date
JPS5520077A true JPS5520077A (en) 1980-02-13

Family

ID=14091208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9375478A Pending JPS5520077A (en) 1978-08-01 1978-08-01 Composite tuning fork type piezoelectric oscilator

Country Status (1)

Country Link
JP (1) JPS5520077A (en)

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