Which of the following components are used in a power supply filter network?

In a power supply, the filter network smooths out the pulsating direct current (DC) produced by the rectifier into a steady, flat DC voltage. Capacitors accomplish this by storing energy during voltage peaks and releasing it during the dips, effectively resisting changes in voltage. Inductors (also known as chokes) are often placed in series with the output to resist changes in current, further smoothing the ripple. While diodes and transformers are essential for stepping down voltage and converting AC to DC, they belong to the transformer and rectifier stages, not the filter network itself.