Method and apparatus for sensing a common mode voltage

Details Method and apparatus for sensing a common mode voltage Method and apparatus for sensing a common mode voltage

1996-10-25

1998-09-15

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Converting, per se, of an ac input to corresponding dc at an...

327354, H03D 300

Patent

active

058084916

ABSTRACT:
A method and apparatus are provided for sensing a common mode signal of a differential circuit. A first full wave rectifier samples the differential signal and generates a first rectified signal. A second full wave rectifier samples the differential signal and generates a second rectified signal. An averaging circuit coupled to the first and second full wave rectifiers averages the first and second rectified signals and generates the common mode signal.

REFERENCES:
patent: 3944906 (1976-03-01), Hill et al.
patent: 4307305 (1981-12-01), Morris
patent: 4647861 (1987-03-01), Petritis et al.
patent: 4704546 (1987-11-01), Mallick, Jr. et al.
patent: 4705969 (1987-11-01), Gross
patent: 5568561 (1996-10-01), Whitlock

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