VOLUME 13 NUMBER 5 NOV/DEC 1973
AC ANALOG then our AC signal has an RMS or ef- amplified or attenuated, rectified by
fective value of 1 volt. the diode bridge and fed to the meter.
VOLTMETERS The meter then responds to this recti-
In addition to its RMS value, a wave-
by Harry Logan form also has a peak and average vol- fied average or DC value.
tage value. See Figure 1. The average value of a sine wave is
zero, so when we say average re-
AC Analog voltmeters are one of the sponding we mean t|