Patent 7312972 was granted and assigned to Keihin Corporation on December, 2007 by the United States Patent and Trademark Office.
An actuator driving circuit for driving an electromagnetic actuator, includes a boosting circuit which boosts a source voltage, and a boosted voltage controller which is connected to an output terminal of the boosting circuit, i.e., the downstream of the boosting circuit, to control a boosted voltage generated by the boosting circuit.