Mechanism for analysing alternating voltage or alternating current signals

摘要

The mechanism includes a window comparator with variable thresholds used for analysing alternating voltage. A VCL signal switches over whenever a threshold adjustment occurs. The VCL signal allows a signal to be created that depends on levels of frequency. The signal created can then be analysed as a measure for the number of revolutions. Input voltage (UE) acts as output voltage for a sensor (SE) which scans a revolving disk (SCH).