Electronics and technology blog    /    Reviews    /    Power Supplies    /    Page 7

Not long ago, I posted about a sale at the Choetech store featuring a compact power supply with a USB output and QC3.0 support. The price was attractive, so I ordered one for myself. Today I want to tell you about this charger.

Another Mean Well for my collection, but today this isn't just a power supply review—it's a review of a used power supply. In my opinion, that's much more interesting and, most importantly, more useful than a review of a new one.

Review of a computer power supply rated at 1000 W.

Almost immediately after ordering the RD6006 converter, I started looking for a power supply to go with it. But as it turned out, I had to wait a very long time for my order, so the follow-up to the review was delayed considerably. But as they say, better late than never.

Another power supply for my collection of Mean Wells, this one from the fairly well-known LRS series, rated at 350 W. Inspection, schematic, tests, conclusions—the usual :)

Today I’m reviewing a rather unusual power supply. Though, to be more precise, the power supply itself isn’t so much unusual as relatively rare “around here,” partly because of its price. One of my regular readers sent it to add to my collection, and I’d like to thank him for that.

I came across a faulty power supply and decided to jot down a note about repairing it, and while I was at it, answer a few questions people ask me, using a real example, so to speak.

This is the second part of the saga, “a battery tester for a friend,” and today I’ll be talking about changing the output voltage of the power supplies and connecting them in series.

Not long ago, I started posting reviews of power supplies from the Banggood store. I also mentioned that I’d be doing several reviews, with the power supplies presented in order of increasing power. Today I have the fourth and final review in the series, where I’ll tell you about a powerful branded power supply.

This is my third power supply review, and this time it’s a 240 W, 12 V model. It’s very similar to the previous one: low-profile, budget-friendly, and another invitation to play roulette. Still, it’s best to read the review to find out all about it, roulette included.

The second power supply sent by Banggood for review, and accordingly more powerful than the previous one. The only thing they probably have in common is that both power supplies are low-profile. As always, the review goes into more detail, with an inspection, teardown, tests, and of course, conclusions..

Not long ago, Banggood sent me several different power supplies. They differ in almost every way: voltage, power, and manufacturer. I decided to test them and publish reviews in order of increasing power, so today I'm reviewing the first one. This power supply isn't very powerful, and it's compact, but I hope it's interesting. Of course, it's best to read the full review for all the details.

It turns out that even the widespread arrival of switching power supplies in our lives—which I’ve told you about in many reviews—hasn’t managed to completely replace conventional transformers. They’re used where a switching power supply isn’t suitable because of its “quirks,” especially in linear power supplies, audio equipment, and many applications where interference is undesirable. Today, I’m going to talk about these transformers.

This is the third power supply from SANMIM and, in my personal opinion, the most interesting of the three. It also looks very much like another power supply model that I think many of my readers will recognize. But you can read all about it in the review.

My second power supply from SANMIM, this time a model from the low-profile series—that is, a “flat” 20 W unit with a 12 V output.

It's been a while since I reviewed a power supply, so I decided to make up for that by buying a few different compact units. As usual, this review will cover the inspection, tests, and conclusions.

Sometimes you need to keep a small device, such as a router, powered without interruption. Using a regular "UPS" for this is both expensive and impractical, so low-voltage UPS units are used instead. Today I'll take a look at a couple of them.

This review is a sort of continuation of my look at compact modular power supplies, which began with a review of a similar model from Hi-Link. This time, though, I got my hands on a unit from a less well-known company, with a different output voltage but the same 3 W power rating.