Vibration member driving circuit
AssigneeCanon Kabushiki Kaisha
InventorJun Sumioka
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Abstract
A vibration member driving circuit causes vibrations in a vibration member at least including an electro-mechanical energy conversion element and an elastic body by applying alternating voltage to the electro-mechanical energy conversion element fixed to the elastic body. The vibration member driving circuit includes an inductor and capacitor serially connected to the electro-mechanical energy conversion element. 0.73*fm<fs<1.2*fm is satisfied where fs is the series resonance frequency by the inductor and the capacitor and fm is the resonance frequency of the vibration member.
Claims1
A vibration member driving circuit which causes vibrations in a vibration member at least including an electro-mechanical energy conversion element and an elastic body by applying alternating voltage to the electro-mechanical energy conversion element fixed to the elastic body, the circuit comprising:
- an inductor and a capacitor serially connected to the electro-mechanical energy conversion element, wherein
- 0.73*fm<fs<1.2*fm
- is satisfied where fs is a series resonance frequency by the inductor and the capacitor and fm is a resonance frequency of the vibration member.
Dependencies are inferred from the claim text.