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BFG ES-800 Power Supply Review

ES-800 is a power supply using a different internal design called “frequency conversion”, with BFG claiming it provides higher efficiency. Is that so? Let’s check this out.

Home » BFG ES-800 Power Supply Review

Transient Filtering Stage

Contents

  • 1. Introduction
  • 2. A Look Inside The ES-800
  • 3. Transient Filtering Stage
  • 4. Primary Analysis
  • 5. Secondary Analysis
  • 6. Power Distribution
  • 7. Load Tests
  • 8. Overload Tests
  • 9. Main Specifications
  • 10. Conclusions

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.

Even though this power supply has two X capacitors and two Y capacitors more than the required, it doesn’t have a MOV, which is a sin on a supposedly high-end product. On the other hand, the coils have a fair better construction than the ones usually used on the power supplies we review.

BFG ES-800 power supplyFigure 7: Transient filtering stage (part 1).

BFG ES-800 power supplyFigure 8: Transient filtering stage (part 2).

In the next page we will have a more detailed discussion about the components used in the BFG ES-800.

Continue: Primary Analysis

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