Emergency capacitor for a contactless device

Details Emergency capacitor for a contactless device Emergency capacitor for a contactless device

2011-01-11

2011-01-11

Fleming, Fritz M (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

C307S064000, C307S048000, C307S104000

Reexamination Certificate

active

07868481

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.

REFERENCES:
patent: 5345231 (1994-09-01), Koo et al.
patent: 6153949 (2000-11-01), Soderhall
patent: 6301138 (2001-10-01), Amtmann
patent: 6703921 (2004-03-01), Wuidart et al.
patent: 2003/0156436 (2003-08-01), Moreaux et al.
patent: 2009/0127934 (2009-05-01), Sbuell et al.
patent: 233495 (1999-07-01), None

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