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Recommended
Switching Power Supplies A - Z, Second Edition
Switching Power Supplies A - Z, Second Edition, by Sanjaya Maniktala (Newnes), starting at $49.58
Home » Power
SilverStone Strider ST50F 500 W Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: April 25, 2008
Page: 3 of 10
Transient Filtering Stage
Hardware Secrets Silver 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.

Even though this power supply has two additional Y capacitors on its transient filtering stage and two additional X capacitors and one additional ferrite coil after the rectifying bridge, it doesn’t have a MOV, which is essential to cut spikes coming from the power grid.

SilverStone Strider ST50F 500 W Power Supply
click to enlarge
Figure 9: Transient filtering stage (part 1).

SilverStone Strider ST50F 500 W Power Supply
click to enlarge
Figure 10: Transient filtering stage (part 2).

The components used here are identical to the ones used on Zalman ZM360B-APS (and possibly on Zalman ZM460B-APS).

In the next page we will have a more detailed discussion about the components used in the Strider ST50F.

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