Frequency measurement circuit

Details Frequency measurement circuit Frequency measurement circuit

G - Physics

01

R

324/38

G01R 23/02 (2006.01)

Patent

CA 1257903

ABSTRACT A frequency measuring circuit measures the period between successive pulses of an input signal and con- verts the pulse count to a measured frequency value. The measured frequency signal is filtered to eliminate spurious noise and a variable threshold is generated by comparing the measured frequency and the filtered frequency. Only frequency signals qualified by the variable threshold are accepted as valid and provided as the output.

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