Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With voltage or current conversion
Reexamination Certificate
2008-03-28
2010-06-29
Nguyen, Ha Tran T (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With voltage or current conversion
C324S076280, C324S076440, C324S1540PB
Reexamination Certificate
active
07746057
ABSTRACT:
A power meter having complex quadrature output current and voltage filters provides power measurements in high amplitude and frequency variation and/or high jitter environments without requiring high computational overhead. A pair of filters, one for voltage and one for current each have a response determined by complex non-conjugate poles. The response of the filters is such that only the positive or negative half plane of the complex frequency spectrum is passed and provide complex outputs representing the real and imaginary parts of both the current and voltage. At least one indication of a power delivered to a load is computed from the complex current and voltage outputs, which may be the real and/or reactive power.
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Cirrus Logic Inc.
Harris Andrew M.
Isla Rodas Richard
Mitch Harris Atty at Law, LLC
Nguyen Ha Tran T
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