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United States of America Patent
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Mar 8, 2011
Grant Date -
May 7, 2009
app pub date -
Aug 13, 2008
filing date -
Sep 10, 2007
priority date (Note) -
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Abstract
The sensitivity and accuracy of a status indicator for sensing a current in an electrical circuit is improved by shifting the reference level of the transformer output to maximize the input signal to a precision voltage detector and by reducing the hysteresis of the status indicator by balancing the burden of the current transformer during the positive and negative alternations of the AC signal and by driving secondary loads with a voltage to current converter.
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