Thank you both for the clarification.
It would seem that Lawrence's Item 8 and Poynt99's preceding post are in agreement as to the basis of the debate even though they are worded slightly differently.
There are some very important differences. [I should mention, and I trust we are all in agreement on this, that all measurements being argued here are based on one that is obtained by first acquiring the instantaneous voltage and current wave forms, then multiplying them together to produce the instantaneous power trace. For circuits of this nature, there is no other sure method (using an oscilloscope) to obtain the value of average power in a circuit.] First, use of the word "approximate" in Item 8 is irrelevant and erroneous. This implies that even though the said computation may not be useful in order to obtain a correct value of power, it is acceptable to use for comparison purposes. This is a logical fallacy if I have ever seen one. The said computation must produce either a correct or incorrect result, and only the correct result can and should be used for comparison purposes and absolute measurement alike. Why would one go through the trouble of obtaining an incorrect result when the correct result is at hand? Second, Lawrence seems to be asking whether we should be applying an RMS or a MEAN computation to the instantaneous power trace. This in fact is the fundamental question and disagreement at hand. But again, Lawrence is only asking questions. He must state an issue then take a stance on that issue, otherwise there is no debate, only questions. We then have the basis of the debate: Which is the proper method of determining the Average Power for a series of P(t) samples where the load is purely resistive?
There is no basis for a debate yet. There must be at least two differing points of view, and so far we only have one. The load is irrelevant. The P(t) method is applicable for all load types. We may be getting closer... .99
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