JPS5487267A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5487267A JPS5487267A JP15469977A JP15469977A JPS5487267A JP S5487267 A JPS5487267 A JP S5487267A JP 15469977 A JP15469977 A JP 15469977A JP 15469977 A JP15469977 A JP 15469977A JP S5487267 A JPS5487267 A JP S5487267A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- motor
- oscillating
- gain
- oscillating circuit
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
- G04G19/08—Arrangements for preventing voltage drop due to overloading the power supply
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
PURPOSE:To maintain the operations such as oscillations or frequency division stable without increasing the power consumption by increasing the gain of the amplifier of an oscillating circuit unit upon the instant reduction in the voltage of a battery, which accompanies the drives of a motor, a lamp, a buzzer and the like. CONSTITUTION:When the output of a pulse composing circuit 3 is at an ''L'' level, the battery voltage is so sufficiently high, when a motor 5 is not driven, that an oscillating circfit 1 and a frequency dividing circuit 2 are operated stably. When motor driving signals are generated from the pulse composing circuit 3, a drive circuit 4 drives the motor 5. At this time, a high current flows to remarkably reduce the battery voltage, but the output of the pulse composing circuit 3 is partially fed back the oscillating circuit 1. As a result, the gain control signals of the oscillating circuit take an ''H'' level, and the gain of the amplifier of the oscillating circuit 1 is so increased that the stable oscillations are continued irrespective of the reduction in the battery voltage. When the drive of the motor 5 is ended, the oscillating circuit 1 continues again its oscillations with the initial low gain.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15469977A JPS5487267A (en) | 1977-12-22 | 1977-12-22 | Electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15469977A JPS5487267A (en) | 1977-12-22 | 1977-12-22 | Electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5487267A true JPS5487267A (en) | 1979-07-11 |
Family
ID=15590001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15469977A Pending JPS5487267A (en) | 1977-12-22 | 1977-12-22 | Electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5487267A (en) |
-
1977
- 1977-12-22 JP JP15469977A patent/JPS5487267A/en active Pending
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