vaihtovirtajännitteille
Vaihtovirtajännitteille refers to alternating current voltages in Finnish. Unlike direct current (DC), where the voltage polarity remains constant, alternating current (AC) voltage periodically reverses its direction. This means the voltage rises to a positive peak, falls through zero, reaches a negative peak, and then returns to zero, repeating this cycle continuously. The frequency of this change, measured in Hertz (Hz), indicates how many complete cycles occur per second. Common mains electricity frequencies are 50 Hz or 60 Hz.
The sinusoidal waveform is the most common representation of AC voltage, characterized by its amplitude, frequency,