JPS577613A - Tuning-fork type quartz oscillator - Google Patents

Tuning-fork type quartz oscillator

Info

Publication number
JPS577613A
JPS577613A JP8158780A JP8158780A JPS577613A JP S577613 A JPS577613 A JP S577613A JP 8158780 A JP8158780 A JP 8158780A JP 8158780 A JP8158780 A JP 8158780A JP S577613 A JPS577613 A JP S577613A
Authority
JP
Japan
Prior art keywords
terminal
electrode
tuning
groove
fork type
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
JP8158780A
Other languages
Japanese (ja)
Inventor
Hozumi Nakada
Minoru Ishihara
Shiyuusuke Matsudo
Akira Nakamura
Atsushi Otomo
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.)
Nihon Dempa Kogyo Co Ltd
Original Assignee
Nihon Dempa Kogyo Co 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 Nihon Dempa Kogyo Co Ltd filed Critical Nihon Dempa Kogyo Co Ltd
Priority to JP8158780A priority Critical patent/JPS577613A/en
Publication of JPS577613A publication Critical patent/JPS577613A/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

Abstract

PURPOSE:To suppress spurious modulation by lowering crystal impedance CI by specifing the ratio of the length from electrode terminals, provided on counter main surfaces of both oscillating arms of a tuning-fork type oscillator for an electronic wristwatch, to a groove terminal and that from the groove terminal to an electrode terminal on a base. CONSTITUTION:Oscillating arms 102 and 103 of a tuning-fork type quartz oscillator 101 are provided successively across a groove 104 and then coupled together by a base 105. An energizing electrode 102b (103a) formed on the main surface of the oscillating arm 102 (103) is extended to the surface of the base 105, and the ratio l/l' of the length (l) from a groove terminal 104a to one terminal 102b' (103a') of the electrode 102b (103a) to the length (l') from the groove terminal 104a to the other terminal 102b'' (103a'') of the electrode 102b (103a) is set to 1.0-3.0.
JP8158780A 1980-06-17 1980-06-17 Tuning-fork type quartz oscillator Pending JPS577613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8158780A JPS577613A (en) 1980-06-17 1980-06-17 Tuning-fork type quartz oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8158780A JPS577613A (en) 1980-06-17 1980-06-17 Tuning-fork type quartz oscillator

Publications (1)

Publication Number Publication Date
JPS577613A true JPS577613A (en) 1982-01-14

Family

ID=13750444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8158780A Pending JPS577613A (en) 1980-06-17 1980-06-17 Tuning-fork type quartz oscillator

Country Status (1)

Country Link
JP (1) JPS577613A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007053819A (en) * 2001-10-31 2007-03-01 Piedekku Gijutsu Kenkyusho:Kk Manufacturing method of quartz unit
JP2007060729A (en) * 2001-10-31 2007-03-08 Piedekku Gijutsu Kenkyusho:Kk Quartz resonator
JP2007209039A (en) * 2001-10-31 2007-08-16 Piedekku Gijutsu Kenkyusho:Kk Method for manufacturing quartz crystal unit
JP2008125100A (en) * 2001-10-31 2008-05-29 Piedekku Gijutsu Kenkyusho:Kk Method of manufacturing quartz crystal resonator, quartz crystal unit, quartz crystal oscillator, and mobile device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495192A (en) * 1978-01-13 1979-07-27 Matsushita Electric Ind Co Ltd Single crystal vibrator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5495192A (en) * 1978-01-13 1979-07-27 Matsushita Electric Ind Co Ltd Single crystal vibrator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007053819A (en) * 2001-10-31 2007-03-01 Piedekku Gijutsu Kenkyusho:Kk Manufacturing method of quartz unit
JP2007060729A (en) * 2001-10-31 2007-03-08 Piedekku Gijutsu Kenkyusho:Kk Quartz resonator
JP2007209039A (en) * 2001-10-31 2007-08-16 Piedekku Gijutsu Kenkyusho:Kk Method for manufacturing quartz crystal unit
JP2008125100A (en) * 2001-10-31 2008-05-29 Piedekku Gijutsu Kenkyusho:Kk Method of manufacturing quartz crystal resonator, quartz crystal unit, quartz crystal oscillator, and mobile device

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