System and method for return electrode monitoring
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United States of America Patent
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Oct 30, 2012
Grant Date -
Sep 23, 2010
app pub date -
Mar 19, 2009
filing date -
Mar 19, 2009
priority date (Note) -
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Abstract
A detection circuit for return electrode monitoring is disclosed. The detection circuit includes a transformer operatively coupled to a pair of split electrode pads, wherein the transformer is configured to transceive a return electrode sense signal. The detection circuit also includes a first switch coupled to the transformer and a neutrally-referenced second switch, wherein the first switch and the second switch are disposed on a single die. The detection circuit further includes an operational amplifier coupled to the first switch and the neutrally-referenced second switch. The operational amplifier is configured to subtract a noise signal from the return electrode sense signal.
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