Method and system for synchronous rectification

Data processing: measuring – calibrating – or testing – Calibration or correction system – Signal frequency or phase correction

Reexamination Certificate

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Reexamination Certificate

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07869972

ABSTRACT:
The method and system of the present invention uses synchronous rectification and frequency domain analysis to remove the need for calibration of the A/D and D/A components. It is applicable to any sensor based measurement in which either the sensor can be excited with an AC voltage or current, or in which the signal can be modulated with an AC voltage or current.

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Lyra et al.; Torque Density Improvement in a Six-Phase Induction Motor with Third Harmonic Current Injection; 2002 IEEE Industry Applications, vol. 38, Sep.-Oct. 2002; pp. 1351-1360.

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