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A continuation of my simple, down-to-earth power supply reviews (with useful links).

Review/thoughts aloud on the 48 V-12.5 A power supply.

While working on a project to build a device for testing and balancing large battery packs, I needed a power supply of around 90 V, so I bought two 48 V, 2.5 A power supplies. They turned out to be unexpectedly decent despite their low price, both in terms of performance and build quality. As usual: inspection, schematic, tests, conclusions.

Another power supply has landed in my hands. I didn't buy it; a friend of mine did, but that doesn't matter here. What caught my attention first was its claimed output of 400 W, its fairly compact size, and the fact that it has power factor correction.

As I mentioned in my previous review, I received several different power supplies, and today I’m reviewing the next one. Last time it was a 12 V power supply, but today’s model has a less common output voltage: 48 V. It still has its own area of application, which I’ll discuss at the end of the review. As usual, I’ll cover the tests and circuit diagrams, and answer some of the questions people asked in the comments.