Patent · US Expired

Device and method for driving at least one capacitive actuator

US6060814A · kind A · utility

21Cited by

9References

5Claims

0Family size

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	Feb 16, 1999
Grant date	May 9, 2000
Priority date	—
Expiry date	Feb 16, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH02N2/067
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device for driving at least one capacitive actuator contains two capacitors C1 and C2 connected in parallel. The two parallel-connected capacitors C1, C2 are charged to an output voltage U.sub.SNT of a voltage source SNT. The actuator is charged with a voltage U.sub.C1+C2 =2*U.sub.SNT by the capacitors, and thereafter discharged into the capacitors, which are again connected in parallel and are subsequently recharged to the output voltage U.sub.SNT of the voltage source SNT.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.