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Switching Power Supplies A to Z
Switching Power Supplies A to Z, by Sanjaya Maniktala (Newnes), starting at $43.50
Home » Power
Kingwin Mach 1 ABT-700MA1S 700 W Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: October 2, 2008
Page: 4 of 11
$ Check REAL-TIME pricing for Kingwin Mach 1 Modular Power Supply - 1220-Watt ATX SLI-Ready Six 12V Rails ABT-1220MA1S $.
CompUSA: $219.99 Newegg: $249.99
ZipZoomFly: $198.99 TigerDirect: $219.99

Transient Filtering Stage
Hardware Secrets Silver Award

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.

On this stage this power supply is flawless, providing two extra Y capacitors and one extra X capacitor. Since this power supply does not have active PFC circuit the two MOVs are installed after the rectifying bridge and physically located between the two electrolytic capacitors from voltage doubler, as this is the usual configuration with power supply without active PFC.

It also interesting to note that this power supply uses a fuse holder, which is a rarity nowadays.

Kingwin Mach 1 ABT-700MA1S / Super Flower Aurora 700 W
click to enlarge
Figure 9: Transient filtering stage (part 1).

Kingwin Mach 1 ABT-700MA1S / Super Flower Aurora 700 W
click to enlarge
Figure 10: Transient filtering stage (part 2).

Now let’s have a more detailed discussion on the components used on Mach 1 ABT-700MA1S.

Pages (11): « 1 2 3 [4] 5 6 7 8 9 10 11 »
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