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I actually reviewed an entire series of these power supplies, but this particular one got held up in transit somehow, so I’m only publishing its test results now. And believe me, this SMPS is worth showing you.

This is a continuation of the previous review, but this time there are twice as many power supplies, and their voltage is also twice as high. The basic idea is much the same, though: these are very interesting models, and they’re available in Ukraine.

Another batch of power supplies has arrived—lots of them, all kinds—and today I’ll tell you about a couple of interesting models worth a closer look.

While I’m waiting for my new electronic load, I decided to put together a quick review of another power supply. There’s nothing particularly new about it, but it may still be interesting in some ways—at least because I haven’t had one like this before.

Today, this is less a review and more a demonstration of how Chinese manufacturers can build two very different power supplies on essentially the same platform.

Once again, power supplies from a Chinese factory have arrived for testing. As you may remember, these tests are aimed either at finding models that offer the best balance of quality and price, or at testing products and getting factory-level issues fixed. I want something simple: power supplies with a decent level of quality that are still affordable.

A couple more power supplies, quite attractive and relatively well made, at least on the outside, but with typical Chinese "quirks" in exaggerated form—at least one of them has them.

You can never have too many power supplies. That’s what I thought, too, so today I’m taking a quick look at four compact sealed power supplies, plus a bonus fifth one. It’s not exactly compact, but it is sealed. And that’s not the end of the bonuses—look for more near the end of the article :)

These are the last power supplies in this form factor to come my way for testing—for now, at least. I doubt they’ll be the last in the long run. They left me with mixed feelings: not bad, but with a few “caveats.” As always, more details in the review.

Another installment in my series of reviews of various power supplies. This time, I’m looking at boards from sealed power supplies rated at 60, 100, 150, 200 and 300 W. I think you’ll find it interesting.

Another installment in the power supply review series, and once again it’s a classic: switching power supplies built around the seemingly eternal TL494 and its equivalents.

A few more power supplies, but this time they’re as classic as they come, both in terms of circuit design and construction, and in how budget-friendly they are. Still, I hope you’ll find this useful.

It just so happened that a number of different power supplies ended up on my operating table. And as you can imagine, they didn’t get there for no reason. Since I have a reason, why not take a look at what they’re all about?

This story began a long time ago—I think more than a year ago, though its roots actually go back to 2023. Today, I’ll show you what it all led me to.

The second test subjects from the batch I received—and this time, these are batteries I hadn't tested before. On top of that, they're simply more interesting than the previous ones.

A new drill driver has shown up at my place—or rather, not exactly new, more like not very old. And it didn’t just show up; I brought it home myself. Anyway, I decided to buy an extra battery for it, and today I’ll tell you how that turned out.

I happened to get my hands on some batteries in the relatively uncommon 17650 form factor. I couldn't resist testing them, and as it turned out, I was right to do so.

Some time ago, one of my readers got in touch and offered to let me test their new product, which had recently gone into production. And what can I say? I'm interested in all kinds of hardware, especially when it's smart. As always, I'll take a look, take it apart, run some tests, and share my conclusions.