JPS5542464A - Inflected ceramic vibrator - Google Patents

Inflected ceramic vibrator

Info

Publication number
JPS5542464A
JPS5542464A JP11617678A JP11617678A JPS5542464A JP S5542464 A JPS5542464 A JP S5542464A JP 11617678 A JP11617678 A JP 11617678A JP 11617678 A JP11617678 A JP 11617678A JP S5542464 A JPS5542464 A JP S5542464A
Authority
JP
Japan
Prior art keywords
temperature
primary
vibrator
young
modulus
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
JP11617678A
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 JP11617678A priority Critical patent/JPS5542464A/en
Publication of JPS5542464A publication Critical patent/JPS5542464A/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
    • H03H9/46—Filters
    • H03H9/48—Coupling means therefor

Abstract

PURPOSE:To obtain excellent frequency-temperature characteristics by decreasing remarkably the absolute value of the sum of the primary temperature coefficient of the Young's modulus of a ceramic vibrator and its primary linear expansion coefficient. CONSTITUTION:Ceramic tuning fork 1 with piezoelectric thin film 2 formed on its surface is supported at its base part by lead wires 3 and 4 as electrode terminals. Denoting the primary temperature coefficient of the Young's modulus of a material for vibrator 1 by E1 and its primary linear expansion coefficient by X1, a frequency variation ratio is unrelated with a temperature with E1+X1=0, namely, when E1 and X1 are opposite in sign and equal in absolute value. By selecting the adequate composition of the material, X1 of (4.0-9.2)X10<-6>/ deg.C and E1 of (-11.2-2.0)X 10<-6>/ deg.C can be obtained, and therefore ¦E1+X1¦ can be reduced below a value of 2X10<-6>. Consequently, frequency variation ratio DELTAf/f is expressed by (I) [wherein t represents the temperature] and excellent frequency-temperature characteristics can be obtained.
JP11617678A 1978-09-20 1978-09-20 Inflected ceramic vibrator Pending JPS5542464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11617678A JPS5542464A (en) 1978-09-20 1978-09-20 Inflected ceramic vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11617678A JPS5542464A (en) 1978-09-20 1978-09-20 Inflected ceramic vibrator

Publications (1)

Publication Number Publication Date
JPS5542464A true JPS5542464A (en) 1980-03-25

Family

ID=14680666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11617678A Pending JPS5542464A (en) 1978-09-20 1978-09-20 Inflected ceramic vibrator

Country Status (1)

Country Link
JP (1) JPS5542464A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0485649U (en) * 1990-11-30 1992-07-24

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083407A (en) * 1973-11-26 1975-07-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5083407A (en) * 1973-11-26 1975-07-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0485649U (en) * 1990-11-30 1992-07-24

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