koziarz@halibut.nosc.mil (Walter A. Koziarz) (12/27/90)
In article <9798@as0c.sei.cmu.edu> rsd@sei.cmu.edu (Richard S D'Ippolito) writes: >Just got around to seeing this, and I'm sure you're quoting me -- anyway, >no, the typical meter (analog or digital) is average responding, RMS >equivalent reading. Peak-reading meters are very rare and specialized. > no argument here; but..... >Again, there is NO SUCH THING as "true RMS"; it's just RMS! > most likely the difficulty is semantics; *most*, typical 'AC' voltmeters do read (either via analog meter or didgits) a value REPORTED TO BE RMS. This is 'okay' as long as the INPUT IS SINUSOIDAL. A 'True RMS' meter will display a reading based upon the heating effect of the input voltage and is, therefore capable of measuring non-sinusoidal voltages and reporting an RMS reading. Walt K. >Sorry to shout! > >Rich