| 摘要 |
PROBLEM TO BE SOLVED: To prevent a drop in an amount of electric energy in an electricity- saving mode and to quickly start an operation in a restart. SOLUTION: When an electronic watch 1 is in the electricity-saving mode, the supply of a power-supply voltage Vss to a control circuit 23 is stopped after a prescribed time has elapsed, and it is possible to restrain electric energy stored in a large-capacitance capacitor 48 from being consumed wastefully. Thus, when a power generation device 40 starts the generation of electric energy, the electronic watch 1 can be started quickly. |
