FSP Aurum CM Gold 750 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.
In this power supply, this stage has one X capacitor and two Y capacitors more than the minimum required. It doesn’t have an MOV, but FSP explained to us that the custom integrated circuit used in the primary can somehow remove spikes coming from the power grid. Since there is no datasheet available for this component, we can’t confirm this information.
Figure 8: Transient filtering stage (part 1)
Figure 9: Transient filtering stage (part 2)
On the next page we will have a more detailed discussion about the components used in the FSP Aurum CM Gold 750 W.