JPS557691A - Electronic watch - Google Patents
Electronic watchInfo
- 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
Links
Landscapes
- Electric Clocks (AREA)
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57148473U (en) * | 1981-03-16 | 1982-09-17 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931146A (en) * | 1972-07-18 | 1974-03-20 |
-
1979
- 1979-06-15 JP JP7525079A patent/JPS557691A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931146A (en) * | 1972-07-18 | 1974-03-20 |
Cited By (2)
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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