Relative phase angle measuring device for AC signals of equal frequency

摘要

The device divides each of the AC signals (A,B) using frequency dividers (1,2) with the same division ratio, with one of the signals (B) fed to the frequency divider via an inverter (3). The divided signals (D,E) are combined via an Exclusive-OR logic (4), with evaluation of the pulse/pause ratio of the output signals (G(I)) from the latter. One of the frequency dividers (1) may be synchronised using the output signal from the other frequency divider (2), supplied via a signal converter (6) providing setting pulses for the setting input of the frequency divider.