Method and device for driving at least one capacitive actuator

USRE38470E1 · kind E1 · reissue

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Christian Hoffmann · Leonberg, DE
• Hellmut Freudenberg · Bad Abbach, DE
• Hartmut Gerken · Nittendorf, DE
• Martin Hecker · Laimerstadt, DE
• Richard Pirkl · Regensburg, DE

Key dates

• Filing date: Apr 30, 2001
• Grant date: Mar 23, 2004
• Expiry date: Apr 30, 2021

Classification

• Technology area (CPC —): General

Abstract

In a driving operation, a capacitive actuator is charged from a series circuit of two capacitors having a charging voltage. An actuator voltage established at the actuator is controlled to a prescribed desired value in a course of a subsequent driving operation; the same procedure occurs for further actuators.