Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Phase comparison
Patent
1984-11-01
1987-01-13
Tokar, Michael J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Phase comparison
324 79R, G01R 2500
Patent
active
046367195
ABSTRACT:
An apparatus for measuring the phase difference between two signals including a precision extender employing a frequency multiplier for each of the signals, apparatus for heterodyning each of the signals back to their original frequencies, and a phase detector for measuring the phase difference of the heterodyned signals.
REFERENCES:
patent: 3600090 (1971-08-01), Wood et al.
patent: 4569078 (1986-02-01), Zuk
Larrowe Vernon L.
Zuk David M.
Environmental research Institute of Michigan
Tokar Michael J.
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