Improved zero-crossing-detector circuit designed for precisely measuring difference between frequencies of two frequency-standard signal sources. Contains low-bandwidth first-stage amplifier and three limiting amplifiers, each "squares" signal bit more. Crosstalk eliminated and jitter reduced to about 10 to the negative 7th power microseconds.
Improved Zero-Crossing Detector
NASA Tech Briefs ; 16 , 9
1992-09-01
Miscellaneous
No indication
English
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