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Home » Power
Kingwin Power Force 850 W Power Supply Review
Author: Gabriel Torres 13,457 views
Type: Reviews Last Updated: November 8, 2012
Page: 3 of 11
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.

In the transient filtering stage, this power supply is flawless, with one X capacitor and two Y capacitors more than the minimum required. It also uses a CM02X integrated circuit to reduce power loss by discharging the capacitors. This chip is the equivalent of the “CAPZero” chip found in some other power supplies.

Kingwin Power Force 850w
click to enlarge
Figure 9: Transient filtering stage (part 1)

Kingwin Power Force 850w
click to enlarge
Figure 10: Transient filtering stage (part 2)

On the next page, we will have a more detailed discussion about the components used in the Kingwin Power Force 850 W.

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