Since most of these type projects seek to measure motor driven things or the 
like, anyone care to address power factor? It can be quite much, even for a 
kitchen stand mixer... ;)


Richard Prosser wrote:
> So for example if we have a sinewave at 325V peak applied to a
> resistor, it will produce pretty much the same amount of heat as if a
> 230V DC voltage was applied.
> 
> With a sinewave, the ratio of the peak value  to this "average"
> (otherwise known as the rms value)  is root2 = 1.414. That's where the
> 1.41 factor comes from and mathamatically it appears as a term in the
> integration result.
> 
> So a "230V" AC supply is actually a calculated value, based on the
> waveform being a sinewave with a peak value of just over 325V.
> 
> The same goes for current.
> 
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