ORIGINAL MESSAGE:
On Thu, 25 Mar 2010 06:03:37 -0700, "Jim Thomson" <Jim.thom@telus.net>
wrote:
>## Bill, EVERY arrl book I have, [back to 1960] plus Orrs'
>books always references ripple to RMS. Every ARRL formulae
>is referenced to RMS.
REPLY:
RMS is a useful piece of info, no argument there, but anyone who is
seriously evaluating a PS will want to look at the output with a scope
to see if there are any "funnies" going on such as the presence of
excessive RF, missing or seriously unequal half-cycles from an FWB,
etc.
Like I said, I am probably prejudiced. I was brought up in electronics
by folks who taught me that a scope is more useful than a meter, and I
still believe that. Of course it is best to have both, but in cases
involving AC measurements, I reach for the scope first.
I worked at Tektronix for ten years too. No doubt that had some
impact. :-)
73, Bill W6WRT
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