JPS557691A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS557691A
JPS557691A JP7525079A JP7525079A JPS557691A JP S557691 A JPS557691 A JP S557691A JP 7525079 A JP7525079 A JP 7525079A JP 7525079 A JP7525079 A JP 7525079A JP S557691 A JPS557691 A JP S557691A
Authority
JP
Japan
Prior art keywords
crystal oscillator
case
ground potential
fixed
stray capacitance
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
JP7525079A
Other languages
Japanese (ja)
Inventor
Shigeru Morokawa
Yukio Hashimoto
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP7525079A priority Critical patent/JPS557691A/en
Publication of JPS557691A publication Critical patent/JPS557691A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To stabilize the oscillation frequency for the oscillation circuit, by specifying the method of fixing for the crystal oscillator case.
CONSTITUTION: The crystal oscillator case 2 sealing the crystal oscillator is fixed to the watch board 3 made of conductive substance such as metal and at the same ground potential of one end of the cell with the crystal holder 1 connected to ground. Thus, the crystal oscillator case 2 is fixed as ground potential, the crystal oscillator is perfectly shielded, and unstable stray capacitance caused between the crystal oscillator and the board 3 being ground potential is only a trace of stray capacitance produced between the electrode of the crystal oscillator and the case 2, and it can be regarded as traces of fixed capacitance by perfect fixing. Accordingly, the unstability of the oscillation circuit caused by unstable change in the stray capacitance due to environment change can be avoided.
COPYRIGHT: (C)1980,JPO&Japio
JP7525079A 1979-06-15 1979-06-15 Electronic watch Pending JPS557691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7525079A JPS557691A (en) 1979-06-15 1979-06-15 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7525079A JPS557691A (en) 1979-06-15 1979-06-15 Electronic watch

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP48056444A Division JPS508564A (en) 1972-10-02 1973-05-21

Publications (1)

Publication Number Publication Date
JPS557691A true JPS557691A (en) 1980-01-19

Family

ID=13570781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7525079A Pending JPS557691A (en) 1979-06-15 1979-06-15 Electronic watch

Country Status (1)

Country Link
JP (1) JPS557691A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148473U (en) * 1981-03-16 1982-09-17

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931146A (en) * 1972-07-18 1974-03-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931146A (en) * 1972-07-18 1974-03-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148473U (en) * 1981-03-16 1982-09-17
JPH019659Y2 (en) * 1981-03-16 1989-03-16

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