Device and method for driving at least one capacitive actuator

US6212053A · kind A · utility

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: Dec 6, 1999
• Grant date: Apr 3, 2001
• Expiry date: Dec 6, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/2082
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The device drives one or more capacitive actuators with a control circuit. The device has a series circuit with a charging capacitor, a discharging capacitor, an electric coil, and the one or more actuators each with an associated selector switch. A discharging switch has a drain terminal connected to the node point between the two capacitors, and a source terminal connected via decoupling diodes to the drain terminals of the selector switches.