Patent · US Active

Emergency capacitor for a contactless device

US7868481B2 · kind B2 · utility

3Cited by

4References

16Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Richard Sbuell · Graz, AT
Walter Kargl · Graz, AT
Albert Missoni · Graz, AT

Key dates

Filing date	Nov 19, 2007
Grant date	Jan 11, 2011
Priority date	—
Expiry date	Apr 24, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH02J50/20
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power supply for a contactless device having a power supply circuit configured to provide an internal power supply voltage, an emergency capacitor circuit having an emergency capacitor, configured to provide a source current during an external field pause, and a power supply regulator configured to regulate the internal power supply voltage and the source current, wherein the emergency capacitor circuit is electrically coupled in parallel with the power supply circuit.

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