[AMPS] Peak reading vs True peak

[Rich Measures]

>
>Jim says:
>
>	>and modulating with a SSB note,the peak level is not much higher
>
>	If you have a single tone on SSB, the peak is equal to the average.
>	If you have two equal, sinusoidal, non-harmonically related tones,
>then the PEP is four times the rms. The 'average' power indicated is
>dependent on the type of RF to DC conversion used: there's often a factor of
>pi/2 comes in.
>
>	> Is there a difference between peak power and True peak power? 
>
>	damned if I know! Bit reminiscent of 'music power' ratings! I
>suspect it's back to the way in which a 'peak' reading voltmeter decide on
>the peak.
>
€  I saw a 115v, wet-dry shop vacuum cleaner with a "4.6 Peak 
Horsepower!" rating.  At 746w/horsepower, even assuming 100% efficiency, 
that's alot of amperes for a standard 20A ac outlet.  My guess is that 
advertised peak horsepower ratings are always "True".  
>
-  cheers, Peter


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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