Cooler Master Elite Power 400 W Power Supply Review
Transient Filtering Stage
Contents
As we have mentioned in other articles and reviews, the first place we look when opening a power supply for a hint about its quality, is its filtering stage. The recommended components for this stage are two ferrite coils, two ceramic capacitors (Y capacitors, usually blue), one metalized polyester capacitor (X capacitor), and one MOV (Metal-Oxide Varistor). Very low-end power supplies use fewer components, usually removing the MOV and the first coil.
Even though this is an entry-level power supply, it has all the required components on this stage, including two MOV’s (installed between the two electrolytic capacitors from the voltage doubler, not shown on the picture below).
Figure 7: Transient filtering stage.
In the next page we will have a more detailed discussion about the components used in the Cooler Master Elite Power 400 W.