JPS5453886A - Flexural crystal vibrator - Google Patents

Flexural crystal vibrator

Info

Publication number
JPS5453886A
JPS5453886A JP12031877A JP12031877A JPS5453886A JP S5453886 A JPS5453886 A JP S5453886A JP 12031877 A JP12031877 A JP 12031877A JP 12031877 A JP12031877 A JP 12031877A JP S5453886 A JPS5453886 A JP S5453886A
Authority
JP
Japan
Prior art keywords
larger
alpha
density
linear expansion
expansion coefficient
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
JP12031877A
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 and Electronics 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 Seiko Instruments and Electronics Ltd filed Critical Seiko Instruments and Electronics Ltd
Priority to JP12031877A priority Critical patent/JPS5453886A/en
Publication of JPS5453886A publication Critical patent/JPS5453886A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To raise the peak temperature of a flexural crystal vibrator by improving the electrode density and linear expansion coefficient. CONSTITUTION:When the peak temperatur is Tp, primary temprature coefficient alpha, and secondary temperature coefficient beta, their correlation is theoretically calculated as Tp=25-alpha/2beta, in which beta is determined only by the crystal. Therefore, to raise Tp, it is enough to enlarge the value of alpha. The value of alpha is larger as the linear expansion coefficient is larger, or the material density is larger. Hence, when the density of the material used in the electrode is larger than the density of crystal, and when the linear expansion coefficient is larger than 14.2X10<-6>/ deg.C, the peak temperature may be raised beyound 40 deg.C, which has been impossible conventionally. Accordingly, by parallel use of two flexural crytal vibrators differing in the peak temperature, the excellent frequency-temperature characteristics may be obtained.
JP12031877A 1977-10-06 1977-10-06 Flexural crystal vibrator Pending JPS5453886A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12031877A JPS5453886A (en) 1977-10-06 1977-10-06 Flexural crystal vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12031877A JPS5453886A (en) 1977-10-06 1977-10-06 Flexural crystal vibrator

Publications (1)

Publication Number Publication Date
JPS5453886A true JPS5453886A (en) 1979-04-27

Family

ID=14783267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12031877A Pending JPS5453886A (en) 1977-10-06 1977-10-06 Flexural crystal vibrator

Country Status (1)

Country Link
JP (1) JPS5453886A (en)

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