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Switching Power Supplies A - Z, Second Edition
Switching Power Supplies A - Z, Second Edition, by Sanjaya Maniktala (Newnes), starting at $48.84
Home » Power
Thermaltake Toughpower XT 775 W Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: February 16, 2010
Page: 3 of 10
Transient Filtering Stage
Hardware Secrets Golden Award

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 required components plus one extra X capacitor, four extra Y capacitors, one extra coil and one X capacitor after the rectification bridges. The MOV is behind the fuse and can’t be seen in Figure 8.

Thermaltake Toughpower XT 775W power supply
click to enlarge
Figure 7: Transient filtering stage (part 1).

Thermaltake Toughpower XT 775W power supply
click to enlarge
Figure 8: Transient filtering stage (part 2).

In the next page we will have a more detailed discussion about the components used in the Thermaltake Toughpower XT 775 W.

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