Kabushiki Kaisha Toshiba

Suzuki Motor Corporation

Yukinori Ando

Tadashi Sugiki

Akihiro Sakurai

Shigeaki Yasuike

Shogo Komura

Ryo Kikuchi

A circuit for driving a capacitive load uses a plurality of driving signals with different phases including a quiescent time, and a driving time having a driving duration and an other time. An inductance element is connected across the driving terminals of the capacitive load, and a switch circuit is provided between a driving voltage source and the capacitive load. During the quiescent time, the switch circuit is closed to make the driving voltages the same potential, minimizing energy loss since no current flows during the quiescent time. During the driving time, the switch circuit is closed for a predetermined driving duration to clamp a sine wave around the peaks of the waveform, and the switch circuit is open during the other time when the sine wave is not at any of its peaks.

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Kanagawa-ken, Japan

Yukinori Ando