växelkomponent
A växelkomponent, often translated as an alternating component or AC component, refers to a portion of an electrical signal that varies cyclically over time. This contrasts with a direct component, which remains constant. In many practical electrical systems, a signal can be seen as a combination of both direct and alternating components. For example, the output of a power supply might have a DC offset and then an AC ripple superimposed on it. The växelkomponent represents the fluctuation or variation around the average DC level.
The analysis of signals into their DC and AC components is a fundamental technique in electrical engineering.