FIELD: measurement technology.
SUBSTANCE: proposed method includes measurement of input signal VIN at converter output, comparison of magnitude VIN with magnitude VREF determined preliminarily, store of peak voltage VPK of input signal. Then, alarm signal VAL is shaped when VPK becomes lesser than reference magnitude VREF determined preliminarily after which threshold voltage VTH proportional to peak amplitude of input signal is determined and VIN is compared with threshold voltage VTH and output signal VOUT is shaped in first mode when VIN exceeds VTH and in second mode when VIN is lesser than VTH. Device proposed for realization of this method has circuit for processing input signal VIN including selector and comparator; said circuit is made in analog or digital scheme.
EFFECT: possibility of furnishing preventive alarm signal till disappearance of signal VIN at converter output.
17 cl, 8 dwg
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