>
>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
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|