Circuit, method and system for providing one or more phase...

Details Circuit, method and system for providing one or more phase... Circuit, method and system for providing one or more phase...

2007-05-22

2007-05-22

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

Reexamination Certificate

active

10801728

ABSTRACT:
The present invention provides a phase voltage circuit. In one embodiment, the phase voltage circuit includes a line voltage stage coupled to at least three input voltage lines and configured to provide at least two corresponding line voltages. Additionally, the phase voltage circuit also includes a difference voltage stage coupled to the line voltage stage and configured to provide at least one phase voltage from the at least two corresponding line voltages.

REFERENCES:
patent: 4249124 (1981-02-01), De Mesmaeker
patent: 4366521 (1982-12-01), Jessee
patent: 4901005 (1990-02-01), Shin et al.
patent: 4933630 (1990-06-01), Dupraz
patent: 6529013 (2003-03-01), Skendzic et al.

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