>In the mean while, I discovered in reading that if I take the RMS of the
>volts and current, multiply them together, then multiply by the cos of the
>phase angle, I will have real power.  Multiply by sin phase and I get

Or multiply the current and the voltage information together in an analog
multiplier and measure the RMS of the result without caring for phase.
This is the standard power meter approach btw.

Peter

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