kopplingskondensator
A kopplingskondensator, also known as a coupling capacitor or bypass capacitor, is a capacitor used to connect circuits or components together. Its primary function is to block the flow of direct current (DC) while allowing alternating current (AC) to pass through. This property makes it useful for isolating different stages of a circuit from each other in terms of DC bias, while still enabling the transfer of AC signals.
In audio amplifiers, for example, kopplingskondensatorer are placed between amplifier stages to prevent the DC bias
The value of a kopplingskondensator is chosen based on the frequency of the AC signal it needs