Electronics and technology blog    /    All publication of the user kirich    /    Page 4

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.

Na-ion batteries based on a relatively new chemistry (though that depends on how you look at it) have finally made their way to me. I bought them specifically for a review and to satisfy my own curiosity, and now I can share the results of some tests with you. I think you'll find them interesting.

Some time ago, I published a roundup of various products and included a nice-looking multimeter that can measure inductance. I also decided to buy one to review and test it, thinking it might be useful. Well, I received it yesterday, tested it, and decided to write a review while it was still fresh in my mind.

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 :)

While putting together a list of products for the 11.11 sale, I spotted some interesting gadgets: bumpers for Riden power supplies. Yes, they’re highly specialized and somewhat controversial, but this time, along with the work-related orders, I wanted to buy something “just for fun”—and I think I made the right call.

I hadn't kept up with the latest additions to the range of converters on AliExpress for a while, but then the app showed me something new. I got curious, started looking into it, and it turned out there were some interesting new products. And as a bonus, here's a few other little things that might come in handy too.

We all know that sellers often pull a fast one during sales, but sometimes there are genuine discounts. Since I know the prices of some products pretty well, I can tell right away whether a discount is real. Anyway, if you’ve been looking for a DL24MP electronic load at a good price, this is the place to go.

The traditional 11.11 sale is coming up, so I decided to put together a bunch of links to products I came across over the year since the last sale. Some are products I bought myself or added to my cart but never got around to ordering, while others are simply things I thought might be useful or interesting.

Not long ago, I showed a new version of an electronic load. In a sense, it’s a downgrade—a step backward rather than forward—but it’s not that simple, so I decided to put together a short article.

Yes, today this isn’t a review or an article, but a story. It’s about the TEC-80K electronic load, which is fairly popular and well known, and about my new device based on this controller.

Today, this isn't a review so much as a look back at my experience searching for, choosing and buying a tablet from one of our online stores, along with a few recommendations based on what I learned along the way. The tablet in question is the Microsoft Surface Pro 9.

Well, is it time for a tasty battery review? Meet the 4695-size lithium batteries. I hope you find this interesting.

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.

I recently received three types of batteries to test, and decided it would be useful to share the results and my thoughts on them.

Today, the Verkhovna Rada of Ukraine passed two bills, No. 11258 and No. 11259, in their second reading and as a whole. They are intended to restore the energy infrastructure and clear mines from Ukrainian territory as quickly as possible.

Yesterday, a package with Fnirsi's new battery impedance tester finally arrived. I spent most of today exploring its features, running a few tests, and writing this review. I'll say right away: I have a lot of work on at the moment and not much time, so I'll keep this relatively brief.

I was asked to share information about a sale on Fnirsi’s new milliohm meter. It looks like an interesting little device, so I thought it might be useful to you.