At 12:11 PM 2/10/01 +0200, you wrote:

>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.

You just need to measure the average of (low pass filter) the
instantaneous current * voltage, that *is* the power.

Best regards,

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