| 摘要 |
An apparatus produces electric power from mechanical vibrations at a frequency f. The apparatus provides a piezo element, which is moved by the mechanical vibration, for producing an electric AC voltage, and also an impedance matching device for matching the impedance of the piezo element to an optional rectifier. The apparatus has an electrically connected capacitive energy store and an energy user, which is connected in electrical parallel with the energy store and to which an output voltage is applied. The piezo element has an inductive element electrically connected to it such that an electric parallel resonant circuit is formed by the inductive element and a capacitance. The electric parallel resonant circuit effectively increases an electric output power for the apparatus. |
