On Tue, 14 Feb 2006 21:25:32 GMT, Owen Duffy wrote:
On Tue, 14 Feb 2006 15:03:05 -0600, (Richard
Harrison) wrote:
I have not read the thread, but I recall from some old memory store that
rms volts times rms amps is one of the definitions of "average power".
Only in a DC circuit, or a purely resistive load in an AC circuit.
I shouldn't use that work ONLY!!!
Only in a DC circuit, or a in an AC circuit (loop) where the current
and voltage measured are in phase. In an AC circuit where the voltage
and current are not in phase you must multiply the product of the RMS
voltage and RMS current by the cosine of the phase difference to get
real power (which is what I think you mean by "average power").
Owen
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