Basic Theory
AC Basics
AC Basics Definition Alternating current is current whose magnitude and direction change periodically. Basic Parameters Frequency (f) Number of changes per seco…
About 5 min read beginner
ACFrequencySine waveBasics
AC Basics
Definition
Alternating current is current whose magnitude and direction change periodically.
Basic Parameters
Frequency (f)
Number of changes per second, unit Hz
Period (T)
T = 1/fAngular Frequency (ω)
ω = 2πfSinusoidal AC
u = Um × sin(ωt + φ)RMS Value
RMS = Amplitude / √2 ≈ Amplitude × 0.707Example: Peak value of 220V AC
Peak = 220 × √2 ≈ 311V After reading
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