Er, what other measurement would you prefer? RMS, Peak...?
Average measurements are equivalent to DC if the relative phase angles are
taken into account and therefore are the most accurate means of comparing
input and output power/energy with devices producing complex output
waveforms when powered by batteries or DC supplies.
Modern digital sampling scopes such as JLN uses are reasonably accurate
within 5% or so on their average measurements however, the internal power
computing functions leave something to be desired on the lower cost
samplers!
IMHO, I prefer average measurements!
Jon F.
Depending on the waveforms, it can be as misleading as yielding 10W, or
even 0W, instead of 100W.
Michel
----- Original Message -----
From: "Harry Veeder" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, June 05, 2006 7:13 PM
Subject: Re: Battery shapes
Michel Jullian wrote:
A watermelon is as close to OU as anything produced in JLN's lab.
Don't know about that, but the reciprocal may well be true. The guy
doesn't
know how to measure electric power for one thing, he multiplies average
current by average voltage!
Michel
As a rough estimate is the calculated value necessarily misleading?
Harry
