VIBRATING-ELEMENT DRIVING CIRCUIT, VIBRATION-TYPE ACTUATOR, IMAGE PICKUP APPARATUS, IMAGE GENERATION APPARATUS, AND DUST REMOVAL APPARATUS

摘要

In a vibrating-element driving circuit including a transformer and a coil as elements for stepping up a voltage, an improvement in a circuit efficiency of the driving circuit is achieved.;The vibrating-element driving circuit includes a transformer, and an inductor connected to a primary side of the transformer, wherein an alternating voltage is applied to a primary winding coil of the transformer, an electro-mechanical energy conversion element of the vibration-type actuator is connected in parallel to a secondary winding coil of the transformer, the inductor is connected in series to the primary winding coil of the transformer, and wherein when the inductance of the inductor is Le1, the inductance of the primary winding coil of the transformer is L1, and Ka=L1/Le1, then the following is satisfied: Ka≦10.

主权项

1. A vibrating-element driving circuit comprising:
a transformer; and an inductor connected to a primary side of the transformer, wherein an electro-mechanical energy conversion element is connected to a secondary coil of the transformer, the inductor is connected to the primary coil of the transformer, and wherein when the inductance of the inductor is Le1, the inductance of the primary coil of the transformer is L1, and Ka=L1/Le1, then the following is satisfied: Ka≦10.