váltakozóáramot
Váltakozóáramú, often abbreviated as AC, is an electric current that periodically reverses direction and changes its magnitude continuously over time. This is in contrast to direct current (DC), where the electric charge flows consistently in one direction. The most common waveform for AC is a sinusoidal wave, meaning the voltage and current follow a sine function.
The primary advantage of AC over DC is its ease of voltage transformation. Alternating current can be
AC power is generated by rotating electrical machines called alternators. These devices use the principle of
The frequency of AC power varies by region. In North America, the standard frequency is 60 Hertz