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Series and Parallel Resistors
Electrical reactance
Resonance
Filters
Voltage Divider
Capacitor Charge
Operational Amplifier
Circuit with IC 555
Electric Power Calculations
Wye-Delta Transformation
Frequency
Logic Gates
FET
81
Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current which flows only in one direction. The usual waveform of alternating current in most electric power circuits is a sine wave, for being the more efficient form of electric energy transmission. In certain applications, different waveforms are used, such as triangular or square waves. While the DC source is constituted by positive and negative poles, the AC is constituted by phases (and, many times, by the neutral conductor).
AC Generators
84
Commutator Ring
DC Generators