| 摘要 |
A folded dielectric film element functioning as an energy converter, consisting of a dielectric film (1, 2) bent into folds (L) and provided with electrodes (K). The electrodes (K) are so arranged in the folds (L), different electrodes being placed in successive folds, that the strength of the electric field increases in one fold and decreases in the other. The elements of the invention allow a high acoustic power to be achieved. In noise damping aplications, the elements function in a multi-effect manner and they also have a passive damping effect as the air flows between the folds. |
