> Or multiply the current and the voltage information together in an analog
> multiplier and measure the RMS of the result without caring for phase.

You would take the average, not RMS, of the instantaneous voltage times
current.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@embedinc.com, http://www.embedinc.com

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