Thermaltake Toughpower Grand 750 W Power Supply Review

Transient Filtering Stage

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.   

This power supply has all the minimum required components plus one additional ferrite coil, four additional Y capacitors, one additional X capacitor, and one X capacitor after the rectifying bridge. The MOV is located behind the fuse and can’t be seen in Figure 9.

Figure 8: Transient filtering stage (part 1)

Figure 9: Transient filtering stage (part 2)

In the next page we will have a more detailed discussion about the components used in the Thermaltake Toughpower Grand 750 W.