TexasRF@aol.com wrote:
>
> I don't have the answer Bill but there is this to consider:
>
> In the capacitor filter, current only flows about 20% of the cycle. This is
> very much not a sine wave and I wonder how rms even applies in this case.
> There has to be some terrific harmonics in that waveform!
rms applies to any waveform - if the voltage/current are sinusoidal,
then the 1.414 or .7071 factors apply. Where the waveform is a series of
short peaks, then there isn't a simple numerical factor to use - the rms
value has to be calculated by looking at data points over a time period,
or measured using something that does the equivalent electronically.
Your example of 5x the current for 1/5th the time leading to 5x the heat
is a much better way of getting the point across!
Steve
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