As we mentioned on other articles, 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. On generic power supplies this stage has only one coil, two ceramic capacitors, one or two metalized polyester capacitors and, if we are lucky, one MOV (Metal-Oxide Varistor).

This power supply from Enermax does not use a MOV at all, being the first time we’ve seen a high-end power supply from a respectable manufacturer not using this component, which is a transient suppressor. As a matter of fact, this is the only flaw we could find on this product.

Enermax used “only” two metalized polyester capacitors, two ceramic capacitors and two ferrite coils on this stage.

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Figure 9: Transient filtering stage (part 1).

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Figure 10: Transient filtering stage (part 2).

The other coils you see on Figure 10 are used on the active PFC circuit.

Now let’s have a more detailed discussion on the components used on Galaxy 1000 W.