| 摘要 |
PROBLEM TO BE SOLVED: To provide a power generation device capable of widening a frequency range in which power can be generated, while suppressing increase in the number of components.SOLUTION: To a first power generation element 11 which performs vibration power generation by utilizing reverse magnetostrictive effects of a magnetostrictive material, an eigen frequency is set which is between two target frequencies different from each other within a frequency range of vibrations to be detected in a vibrator 17 and different from a frequency indicating a maximum vibration acceleration. Thus, power can be generated even of vibrations in a frequency different from the eigen frequency of the first power generation element 11 are applied from the vibrator 17. The need of a separate component such as a dynamic damper can be eliminated, thereby widening the frequency range in which power can be generated, while suppressing increase in the number of components.SELECTED DRAWING: Figure 1 |
