AC Attributes
(continued)
The magnitude of a sine wave can be described by the RMS value
(effective heating value), the peak-to-peak value (2 x zero-to-peak),
or the average value. Each value conveys information about the sine
wave. The table below shows several common waveforms with their
respective peak and
RMS values.
V –
0
T
t
V –
0
V
C.F.
X 1 -
Ë
Ì
Í
1
C.F.
Û
Ü
Ý
2
»
T
t
»
V –
0 –
Waveform Shape Crest Factor (C.F.)
1.414
1.732
AC RMS AC+DC RMS
V
1.414
V
1.414
V
1.732
V
1.732
V
C.F.
Each waveshape exhibits a zero-to-peak value of “V” volts.
Crest factor refers to the ratio of the peak-to-RMS value of the waveform.
Chapter 7 Tutorial
Attributes of AC Signals
284
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