| 摘要 |
An electronic timepiece comprises power generation means for generating electricity by using external energy, storage means for storing electric energy received from the power generation means, time-indicating means powered by electric energy supplied from the power generation means or the storage means for indicating time, a switch circuit including a plurality of switching elements and adapted to transfer or intercept electric energy between the power generation means and the storage means and between the power generation means and the time-indicating means, voltage measuring means for measuring voltage across the time-indicating means, and control means that selects one of predetermined power ratios based on the results of measurement by the voltage measuring means and controls the switch circuit according to the selected ratio when the power generation means charges the storage means and the time-indicating means.
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