Waveform comparing phasemeter

Details Waveform comparing phasemeter Waveform comparing phasemeter

1975-09-11

1977-05-24

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324 83A, G01R 2500

Patent

active

040258483

ABSTRACT:
An electrical circuit for measuring the phase difference between a pair of nput signals by uniformly limiting selected properties of the waveforms describing the input signals and modulating an output signal in dependence upon the duration of contrariety between the unlimited properties of the input signals whereby error in the output signal due to "jitter" (i.e., abrupt, spurious variations in pulse amplitude or duration caused by superimposition of noise) is substantially eliminated. Various output means produce either a continuous wave analog signal or a digital bit signal in dependence upon the modulation of the output signal. Coupled ancillary circuitry monitors one input signal in comparison with the other input signal and provides an output signal signifying which input signal has a leading phase angle.

REFERENCES:
patent: 3263066 (1966-07-01), Seegmiller
patent: 3296581 (1967-01-01), Waruer
patent: 3414816 (1968-12-01), Tobey et al.
patent: 3619058 (1971-11-01), Hewlett
patent: 3854117 (1974-12-01), Fothergill

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