OVERCURRENT DETECTION CIRCUIT AND SIGNAL AMPLIFYING DEVICE
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United States of America Patent
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Issued Date -
Apr 28, 2011
app pub date -
Oct 7, 2010
filing date -
Oct 22, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a signal amplifying device which includes an overcurrent detection circuit, a first inverting amplifying circuit amplifying an input signal, and a second inverting amplifying circuit amplifying an output of the first inverting amplifying circuit. The overcurrent detection circuit includes a comparison circuit and a decision circuit. The comparison circuit compares the voltage of the input signal with the voltage of an output of the second inverting amplifying circuit, and generates a signal responsive to the comparison result. The decision circuit detects overcurrent from the signal output by the comparison circuit.
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