Method and apparatus for phase detection having a narrow dead ba

Details Method and apparatus for phase detection having a narrow dead ba Method and apparatus for phase detection having a narrow dead ba

1979-06-18

1981-08-04

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324 83D, G01R 2500

Patent

active

042824826

ABSTRACT:
Two input signals of uncertain phase relationship are applied to trigger circuits which develop sharply defined logic level transitions in response to the input signals crossing predetermined amplitude threshold levels. These logic level transitions are then used to clock a register whose outputs are gated and filtered to provide a DC output signal whose level indicates the phase difference between the two input signals.

REFERENCES:
patent: 3414816 (1968-12-01), Tobey et al.
patent: 3854117 (1974-12-01), Fothergill
patent: 4017801 (1977-04-01), Riedel
patent: 4025848 (1977-05-01), Delagrange
patent: 4128812 (1978-12-01), Pavlis

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