[Amps] Measuring RF Power

[R.Measures]

On Mar 21, 2005, at 10:06 AM, Gary Schafer wrote:

>
>
> 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.

Average power is not a measure of heating ability.  RMS power is a 
measure of heating ability.
cr
> 73
> Gary  K4FMX
>
>
>
>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org