Electronics and technology blog    /    Reviews    /    Power Supplies    /    Page 3

A quick look at a handy little gadget. I bought a few to have on hand, and maybe I’ll include one with one of the new loads.

As I mentioned recently, I needed to build a powerful charger for one of my custom electronic loads. I’ve already shown you the converter, so now it’s time for the power supply. I’ve reviewed a similar SMPS before, which makes this all the more interesting—we’ll compare them.

A quick look at an inexpensive adjustable 60 V, 20 A voltage converter. It’s not exactly great, but I wouldn’t say it’s terrible either. Overall, you get what you pay for.

This article came about spontaneously. A few days ago, a friend messaged me saying his Mean Well UPS had stopped working: it runs for about an hour and a half, then shuts off, even though the battery is supposedly 12+12 Ah. By the way, this is the same friend who had previously sent me another Mean Well UPS to turn into a UPS :)

I think it's perfectly fair to call this post an advertisement. Yes, I decided to become, so to speak, a dealer (or representative) for one of the Ukrainian companies. Though the reality is a little more complicated, but that's beside the point. Anyway, I've added some useful, high-quality devices to my OLX page.

A couple of months ago, one of my readers sent me a RuiDeng power supply to test. Well, it’s sold under that brand, although as far as I understand, it has nothing to do with the company itself. He sent it to me because he’d seen my review of the same power supply, bought from the same store, but it turns out quite a few changes have been made since then.

Recently I announced a new product from RuiDeng: the RD6030 converter, with an output current of up to 30 A. It’s definitely an interesting new model, so I ordered one right away. Today I’m ready to take a closer look at it.

I've already explained how to turn an ordinary power supply into a charger, but for a long time I couldn't shake the thought that a charger should work more properly. Then I came up with the idea of making one that was not only proper and simple, but also based on the adapter board I'd already shown.

Given the current situation—or, more precisely, the lack of "power"—charging batteries has become a serious problem, preferably with fast charging. On top of that, I got the idea of building a small UPS for the refrigerator, which also needs a charger. I bought several LRS-350-12 power supplies for this whole project, but as you can imagine, things aren't quite as simple as I'd hoped :)

Quite unexpectedly, RuiDeng has released a new converter model. I really wasn’t expecting this from them after the RD6024 came out. Here’s a quick look at what they’re offering.

While testing various electronic loads, I ran into a problem: I needed a high-power adjustable power supply—well, relatively high-power, of course :) I already have an adjustable supply based on an RD6024 converter, and everything would be fine, except it had only an 800 W power supply, while I needed at least 1200 W. So, during the November sale, I picked up a 1500 W unit for an upgrade.

Another power supply, and Sanmim again—but this time it’s a 50 W model, somewhat similar to the Meanwell LRS-50-12, which I reviewed just recently. In short, it’s a very interesting power supply.

Another power supply I bought at the Kharkiv Cosmodrome. It's been sitting around for a long time; somehow I never got around to showing it. But now I've finally caught up a bit with the day-to-day stuff and tested it.

Another compact power supply from a fairly well-known manufacturer, this time rated at 12 W. The short version: I was impressed.

I needed a power supply for one of my new projects (among other things), so I decided to order a few different models to try out and test. Today, I’m reviewing the first one. A look inside, tests, and conclusions.

About a month and a half ago, I reviewed an inexpensive power bank case that was convenient, affordable, capable of delivering up to 22 W, and supported fast-charging protocols. But ever since then, I’ve wanted not only to fit it with the highest-capacity batteries possible, but also to make a few improvements.

Some time ago, I announced a new product from RuiDeng: an enclosure with a power supply. The kit I ordered has finally arrived, and that’s what I want to tell you about today.

I can’t even remember when or how this little board came into my possession, but it was clearly a long time ago. It sat around for years until I happened to come across it and decided, just out of curiosity, to figure it out and repair it. Read on to see how that went.