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Assuming a relatively high pulse frequency compared to the "attack" and "decay" times of the meters, the analog meters will provide a very good average, even with missing pulses. Think of the sluggish meter movement as a loaded filtering capacitor, and this will be very close.
Now, if the rectified output was heavily filtered, and I believe he is doing that now with a 47,000u or 470,000u capacitor, and we use a CSR or current meter after this filter cap, we can get a pretty good idea of the output power, provided the filter cap is not loaded too heavily. The load can be "matched" to the output by monitoring the output voltage with a DMM while the load resistance is steadily lowered until the measured output voltage starts to drop. Take a DC voltage or current reading at this point and using the final measured resistance of the load, the output power can be calculated with some degree of accuracy, at least close enough to know if it is higher or lower than the input power. This method should work well with any electrical device where the output can be rectified, and the input is a DC source.
I don't think taking the RMS of a pulsed DC output then using V2/R is going to work because the voltage and current information is not present, and we know those will most likely not be in-phase. But I could be wrong.
At any rate, I agree with Peter at this point. He seems to have looped the device, and that tends to make the output power measurement a moot point at this time.
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Topic: Romerouk's Muller Replication (Read 510646 times)
