Zero-crossing detectors (in measuring circuits G01R19/175)

Manipulation of pulses not covered by one of the other main groups of this subclass > Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant > Zero-crossing detectors

Manipulating of pulses not covered by one of the other main groups of this subclass (circuits with regenerative action H03K3/00, H03K4/00; by the use of non-linear magnetic or dielectric devices H03K3/45) > Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant (switching at zero crossing H03K17/13) > Zero-crossing detectors (in measuring circuits G01R19/175)