R. Measures wrote:
>
> On Mar 21, 2005, at 9:08 AM, Gary Schafer wrote:
>
>>
>>
>> Tony King - W4ZT wrote:
>>
>>> Harold B. Mandel wrote:
>>>
>>>
>>>> <snip> PEP is different
>>>> than RMS, and RMS is different than Average. <snip>
>>>>
>>>>
>>>
>>> It may be worth mentioning that RMS is the usual method of defining a DC
>>> equivalent which, given a pure waveform, will be about the same as the
>>> average. With distorted waveforms RMS will not define the average
>>> properly.
>>
>>
>> It may also be worth mentioning that there really is no such thing as
>> "RMS power". The proper term is average power. RMS is only valid in
>> terms of voltage or current.
>>
>> You can find an RMS value of power but it is not useful for anything.
>
>
> It's fairly useful for heating water.
>
Only average power is useful.
73
Gary K4FMX
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