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About a year ago, I reviewed my Atorch load switching board. Then they released a new version of the load, followed later by a new switching board. I waited a long time, hoping someone would post decent photos for analysis, but nobody did, so I finally bought one at the end of last year.

It all started when I needed to buy a few fans and wanted something from a reputable brand. Today, I want to tell you how that turned out.

About 4 years ago, I wrote an article about repairing an air conditioner circuit board. Now someone got in touch with me who had exactly the same board and exactly the same fault. At first, we were talking about the ins and outs of service centers, but one thing led to another, and the conversation turned to whether I could repair the board. Well, why not? I could, so I got it and here’s my report.

Today I have a short review on a very popular topic: fuses. Yes, we’re talking about the component that, as everyone knows, is the last thing to blow. Of course, there are plenty of nuances here, and I’ll try to explain some of them.

Some time ago, we got to talking about manufacturers of protection devices, and I said that I consider products from three companies to be high quality: Novatek-Electro, Meandr, and Zubr. Meandr products aren't readily available to me, and I've shown Novatek products several times, so now it's the turn of another Ukrainian manufacturer, DS Electronics, which makes products under the ZUBR trademark.

It's been quite a while since I last tinkered with Novatek devices, and now I've got several candidates for review. Today we're looking at a multifunctional relay that combines several devices in one, but as always, more details in the review.

I've already reviewed the decent RN-263t voltage relay, and now I've got a simpler, but possibly just as useful, RN-119.

This device is hard to classify as a “residential” product, although of course it can certainly be used that way. Its main applications are small businesses, office buildings, rental properties, and so on. Even so, I found the device interesting in its own right, and I’m planning to use it at home. But you can read all about it in the review.

After reviewing two phase-selection relays, I managed to arrange for a couple of interesting devices to be provided for review. One is aimed at the "household" market, while the other is more geared toward small businesses. Today I'm reviewing the first one, the RN-263T voltage relay.

Not long ago, I was asked to review an interesting, if rather specialized, device: a phase selection relay. Today, I’m not only reviewing the relay itself, but also adding a little extra that I think is quite significant. But as usual, it’s best to read the full review, which includes a description, a closer look, and a teardown.

I don't think I'm far off the mark if I say that many people who use multimeters have had to buy probes for one sooner or later. Sometimes it's to replace old ones, sometimes to improve performance, and sometimes to make measurements more convenient. I wanted to make my main UT181A a little more convenient to use too, so today I'm reviewing a set of probes and tips.

My work often puts me in situations where a device connected to a computer via USB must not have a direct electrical connection to it. Otherwise, this can cause anything from severe interference to complete loss of functionality, as well as interaction between the computer’s power supply and the device under test. There aren’t many ways to solve this, and the simplest is to use galvanic isolation.

I’ve run into situations more than once where controlling devices directly from a computer over USB is easy to set up, quite reliable, and inexpensive, but still has its drawbacks. The main ones are that you’re tied to the computer and that simple adapters don’t provide galvanic isolation. This adapter was bought to solve all of these problems.

Lately, I’ve been getting more and more different batteries to test, so I decided to pick up a couple of simpler holders to complement my powerful universal holder. Today I’m reviewing two of these simpler—and therefore less expensive—holders.

This isn’t my first review of various thermal interface materials, and today I’m going to try another thermal paste and another thermal pad. They’re useful things for electronics hobbyists, computer enthusiasts, and others, so I decided to test them out of curiosity. There’s also a bonus in this review: a test of three types of thermal adhesive and one more thermal paste.

Not long ago, I reviewed a thermally conductive adhesive for attaching all sorts of heatsinks to all sorts of electronic components, and one of my readers asked me to test a few more similar compounds. So today I’m reviewing—or, more precisely, testing—three types of adhesive and one thermal paste. And at the end of the review, there’ll be a table and a graph bringing together all the thermally conductive (and not so conductive) compounds and materials I’ve tested.

Following up on my review of buying ceiling lights, I decided to write an article about modifying their drivers—or, more precisely, about some interesting capacitors from Samwha, different types of electrical cable, and the details of working when you have a lot of boards to modify. I hope you find it interesting and useful.

Today I'm reviewing a rather interesting and useful device, if it weren't for a few "buts" that slightly spoiled my overall impression of what is, all things considered, a pretty decent piece of hardware. I'm talking about an eight-channel relay module with remote control over Ethernet.