Signal generation device and signal generation method
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United States of America Patent
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Apr 21, 2015
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Feb 26, 2015
app pub date -
May 24, 2013
filing date -
May 28, 2012
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Abstract
A signal generation device and a signal generation method may measure leakage currents, such as an input current value I and phase-shifted current values I cos θ and I sin θ in a short period of time and automatically output the detected values without calculating a vector of a phase difference. The signal generation device generates logical signals from a voltage waveform and a current waveform of a measured power line through first and second comparators, sets parameters, full-wave rectifies the current waveform, and performs quantization transform on the full-wave rectified current waveform using a successive ΔΣADC.
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