voltage. Their effect on an aluminum disk is proportional to the product including the phase angle, in other words the complex product of voltage an d current. The meter has fixed magnets that create drag making the rotatio nal speed of the rotor proportional to the power being drawn.
the relative phase, then finding the product though the EM effects on the d isk.
e and current and finding the product. It is easy to find various circuits to multiply two quantities. It's not hard to find various ways to measure voltage and current. Async voltage to PWM converters for both the voltage and the current taps, then use an XOR to find the instantaneous product. Smooth the pulses and you have an analog signal proportional to the instant aneous power.
og can't go through zero. The bias would be subtracted out at the end pote ntially creating a problem of a small difference of two large signals.
I guess you missed the post about brain storming the approach. Not looking for perfect or even obviously practical. Just looking for novel.
I'm glad you understand the utility of digital electronics. Now you just n eed to learn to use them.