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With this short article, I’m starting a series about repairing various devices that occasionally end up on my workbench. The first article will be about repairing a 5 V, 60 A power supply. I’m also planning to publish articles for beginners, so I’d be interested to know what readers would like to learn about.

I got my hands on a rather interesting charger—or, more accurately, a power supply. But this name has become so firmly associated with this category of devices that it’s probably easier to call it a charger. As always, the device has its pros and cons, which I’ll show you. I’ll also take it apart and give you some information on how to choose power supplies and chargers properly.

Sometimes I feel like I could write about power supplies forever. I just like them, that's all. About a year ago, I reviewed the GOPHERT CPS-3205, a very interesting adjustable power supply with pretty good build quality. Not long ago, I came across a more powerful version of this power supply. I couldn't resist and bought it. As always: inspection, tests, teardown, and conclusions.

I think some readers still remember my review of a kit for building a linear bench power supply. Despite a few shortcomings, the board turned out to be quite interesting. When a friend sent me a link to the kit reviewed here, my first thought was, “That’s the same board.” But in reality, things turned out a little differently. Anyway, if you’re interested in this kind of thing and want to find out how to build a small bench power supply, read on.

About a year and a half ago, I reviewed a project using the smaller DC-DC converter board from the ZXY60xxS family. The power supply is in good shape and works perfectly well. But after using it for a while, I realized I wanted something different. So about a year ago, I started designing a more practical power supply (at least for my needs). Anyway, if you're curious what I cobbled together in the end, read on. Warning: lots of traffic, lots of photos.

This review continues the previous one, but since doing two reviews in a row about the same product would be somewhat illogical and inappropriate, at least the opening will focus on one of the interesting parts I bought for the future power supply.

Power supplies aren't always high-power units; some are very small, but no less useful for it. Today I have four representatives of this class of power supply on my “operating table,” but they'll go through the same tests as always.

<!--image_begin:https://www.kirich.blog/uploads/posts/2015-11/1448774040_48-volt-5-amper-i-240-vatt-ili-blok-pitaniya-kotoryy-smog-udivit.jpg|left|48 Volts, 5 Amps and 240 Watts, or the Power Supply That Managed to Surprise Me--><!--image_end--> Many of you know how much I like different power supplies. I’ve reviewed 5, 12, 24 and 36 V power supplies, and today it’s time for the next step: a 48 V power supply. So, a 48 V, 240 W power supply has landed on my workbench. We’ll take it apart, measure it, test it and, of course, analyze it.

Sometimes I feel like no matter what I review, I always end up reviewing a power supply. But in this case, reviewing a power supply was the plan from the start. I’d seen it before, so I was even more interested in getting my hands on it and sharing my impressions with you. Tests, teardown, analysis—everything as usual, in the same place :)

In my previous power supply review, I touched on how to choose the right power supply. To be honest, I didn’t expect this topic to be so useful. In the comments—and even more so in private messages—people asked me about other aspects of choosing a power supply, how they work, and how to troubleshoot them. In this review, I’ll try to answer most of these questions, and perhaps raise a few new ones too :)

A few times in the comments, and later in private messages, people asked me to review power supplies with a specific voltage. I replied that I’d try to get hold of some for review and testing. Today I’m reviewing a 5 V power supply. But simply reviewing it would be rather boring, so this time I’ll try to explain what the different components in a power supply do and what to look for when choosing one.

Many of you already know that I have a soft spot for all kinds of power supplies. This review is two in one: this time, I’ll be looking at an electronics kit for building the core of a bench power supply, as well as a real-world implementation of it. A heads-up: there’ll be lots of photos and text, so stock up on coffee :)

In my previous power supply review, I mentioned that I had ordered two units to review. Today, I'll tell you about the second one. It's interesting in its own way and well made, but it does have some drawbacks. As always, all the details are below the fold.

Since I've been working with various power supplies for a long time, I can often tell how good one is just “from a photo.” That was the case this time too: I ordered a couple that looked pretty good to test. So far, my intuition seems to have been right. As always, more after the jump :)

Today I’ll write not only about a product I tested, but also about how sometimes you plan one thing and, for some reason, end up with something completely different. Anyway, if you’re interested, read on.

In April, I reviewed a pretty interesting, well-made 12 V power supply. I was really impressed by its value for money. But people asked in the comments and later in private messages about the same power supply, but with a 24 V output. With this review, I'll try to answer that request and show you what it's like.

It all started when the power supply for my old tablet began acting up, so I decided to find a replacement. I found one with the familiar plug and a non-detachable cable. I’ll probably repair the old power supply—I’ve already thought of a use for it—and today I’ll try testing the new one.

<!--image_begin:https://www.kirich.blog/uploads/posts/2015-04/1428353400_esche-odin-12-volt-blok-pitaniya-no-uzhe-na-1-amper.jpg|left|Еще another 12 V power supply, but this one is rated for 1 A.--><!--image_end--> In my previous review, I misspoke when I said there were two items in the package. Today I’ll show you what else arrived. I ordered this power supply for a very specific purpose, but I’ll tell you about that at the end. This review will be very similar to the previous one. If you’re interested, read on.