FREQUENCY-PHASE COMPARATOR Russian patent published in 2012 - IPC H03D13/00 

FIELD: electricity.

SUBSTANCE: in a frequency-phase comparator two AND circuits, an OR circuit, a delay element, two monostable flip-flops and two triggers are introduced. Introduced elements make it possible to produce signals corresponding to passage of two pulses of one of comparable frequencies between two pulses of the other one of the compared frequencies, to eliminate dependence of comparator operation on duration of source pulses, a controlled and reference frequency.

EFFECT: higher reliability of operation.

1 dwg