Many years ago ( more than I really wish to remember, but this discussion
has reminded me)
we sat ina class in college and drew a graph of Irms times V rs to get rs
power, and as I remember, it looked like the pulsating DC output from a full
wave rectifier. I also remember never having used this fact since, since Vrms
times I rms is the same heating power as those currents at zero frequency
would provide (I have a dislike for 'DC current'!). In other words, the average
power.
I suspect others may have used this: I know others have used Laplace
transforms in their professional careers, while I have used them once since
learning something (which I have, of course, since forgotten) about them in
1969!
73
Peter G3RZP
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