| 摘要 |
The present invention provides a driving circuit for a vibration apparatus which drives an object using a vibration wave generated by an electro-mechanical energy conversion element is equipped with an electrical resonance circuit, and which is capable of reducing harmonic components of an alternating voltage applied to an electro-mechanical energy conversion element. The electrical resonance circuit includes an electrostatic capacity of the conversion element, plural inductors connected in series with the conversion element, and a capacitor connected at one end between the plural inductors and connected in parallel with the conversion element. The electrical resonance circuit has at least two resonance frequencies including a first frequency and a second frequency and satisfies the relation: f1<fd<f2 where f1 is the first frequency, f2 is the second frequency, and fd is a frequency of an alternating voltage.
|
