Andy Wade wrote:
"Ian Stirling" wrote in message
...

Actual real RMS watts.

Grrr - this is a common and seemingly self-perpetuating error. You don't
mean RMS watts, you mean mean (i.e. average) watts, for a sine wave, into a
resistive load. You mean the product of the RMS output voltage and current
into the load. This is the average value of the power delivered - the
'heating power' in other words. That's the whole point of using RMS values
for voltage and current, but it's nonsensical to talk about "RMS power".

Yes, strictly one should speak of RMS power into a n ohm load, which is
sensiblke.