| Huntkey Green Star 550 W (LW-6550SG) Power Supply Review |
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$ Check REAL-TIME pricing for Amazon.com Corsair CMPSU-620HX 620-Watt HX Professional Series Modular Cable Design 80 Plus Certified Power Supply compatible with Core i7 and i5 Electronics $ |
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| Transient Filtering Stage |
As we mentioned on other articles and reviews, the first place we like to take a look when opening a power supply to have a hint about its quality is its filtering stage. The recommend 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 than that, usually removing the MOV and the first coil. This power supply is flawless on this stage, having one extra X capacitors and one extra coil. This power supply has two MOVs located after the rectification bridge (and not before as usual), physically squeezed between the two electrolytic capacitors.  click to enlarge Figure 7: Transient filtering stage (part 1).
 click to enlarge Figure 8: Transient filtering stage (part 2).
 click to enlarge Figure 9: Transient filtering stage (part 3).
Now let’s have a more detailed discussion on the components used on Green Star LW-6550SG. |
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