| 摘要 |
PROBLEM TO BE SOLVED: To enable confirming the functioning state at a specific time after termination of generation means without providing any special display in a watch using a power source charged with the generation means. SOLUTION: Usually, a capacitor element 10 is charged with a solar battery 9 to supply the charged voltage to a watch circuit 7. If push switching elements 15 and 16 are operated at desired time, a power source switching circuit 11 lowers the charged voltage of the present capacitor element 10 to the voltage corresponding to the charged voltage of the capacitor element 10 after driving the watch circuit for a specific time in the case the watch circuit 7 is supplied from the capacitor element as a power source during the outage of the generation function of the solar battery 9, and supplies it to the watch circuit 7. By this, by looking the indication state of hour hand 2, minute hand 3 and second hand 4 moved by the watch circuit 7 driven by the lowered voltage, the operation state of the watch after the specific time can be confirmed without providing any special display. |
