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The method consists in converting the resistance of the line in pulses of alternating widths which is compared to a preset time interval. When the pulse widths exceed the preset time interval, a registration circuit becomes operational. In the measurements, the electromagnetic disturbances in the line have no effect on the noise resistance, or the accuracy of measurement, respectively.
BG97753A1993-05-201993-05-20Method for the registration of any change of resistance of a physical line
BG97753A
(en)