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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
HEC WinPower 480 W Power Supply
Author: Gabriel Torres
Type: First Look Last Updated: November 7, 2006
Page: 4 of 9
$ Check REAL-TIME pricing for Amazon.com Digitech PS0913B Power Supply for JHE XAS-BM JamMan Whammy EX7 GNX1 RP100-350 RPx400 BP200 Vocal 300 Vx400 EXH VL2 VL4 HarmonyMan TimeBender Musical R $.
Amazon: $39.95

Transient Filtering Stage

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. 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, which is essential for cutting spikes coming from the power grid, and the first coil.

This power supply from HEC has more than the minimum recommended number of components for this stage. In addition to the above list, it uses one extra metalized polyester capacitor (X capacitor), see Figures 9 and 10.

HEC WinPower 480 W
click to enlarge
Figure 9: Transient filtering stage (part 1).

HEC WinPower 480 W
click to enlarge
Figure 10: Transient filtering stage (part 2).

A very interesting feature from this power supply is that its fuse is inside a fireproof rubber protection. So this protection will prevent the spark produced on the minute the fuse is blown from setting the power supply on fire.

Now let’s have a more detailed discussion on the components used on WinPower 480 W.

Pages (9): « 1 2 3 [4] 5 6 7 8 9 »
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