Electronics and technology blog    /    Page 15

I was just looking for a signal generator and decided on the UNI-T UTG932E. Since I came across a pretty good price, I thought someone else might find it useful too.

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.

I’ve reviewed a similar converter before—or at least one that looked very much like it. But in this case, the store says it’s the Second generation, i.e. attempt number two :) So why not take a look and see what it’s all about.

Today I'm reviewing a voltage relay from the fairly well-known Volt Control series, specifically the VC-115 model. Inspection, teardown, tests, conclusions—as usual.

It's been a while since I posted a roundup, and there's another sale on AliExpress. Anyway, I didn't spend long looking around; I just decided to share links to products I've ordered recently, in case they might be useful to someone else too. These are all products I actually ordered, and I've already received some of them, so the sellers have been tested.

Not long ago, I posted some information about the relatively new DL24M electronic load, a follow-up to the DL24, which I reviewed about a year ago. When I posted about the DL24M, AliExpress was having a sale, so I bought one for myself, and today I want to tell you about it.

About a year and a half ago, I reviewed the interesting, very high-quality ANR26650M1-B batteries from Lithium Werks. Now I’ve got the same batteries, but sold on AliExpress. Let’s inspect and test them, compare them with the previous ones, and hopefully this will be useful. I think I’ve also figured out how to read the production date on these batteries.

I picked up a USB hub and a Bluetooth adapter in a recent sale and thought I’d share my impressions in case they’re useful to someone :)

I’d already been asked about this device, and that’s exactly why I ordered one—to get a hands-on look at it. This time, I’ll be looking at a power limiter for connected devices. It can help when the combined power draw of the connected loads might exceed the available power limit.

Another power supply from Sanmim, but this time it's very compact, though not particularly powerful. As this review shows, it has plenty of interesting features. Inspection, tests, schematic, conclusions.

At first, as before, I wanted to write two reviews, one for each type of battery. But then I thought: the batteries have similar specs, so why not combine the two reviews into one? So today, it’s a “two-in-one” review, plus a comparison.

Another review in the “nano” series, and this time it’s about a very useful little item to have around: fasteners.

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.

Today I have a nano-review of caps for push buttons, also known as “tact switches” or “tactile switches”—whichever term you prefer.

I've had all kinds of batteries: standard ones, protected ones, ones with a converter, and even one with a built-in charger. But this is the first time I've come across a battery this unusual. Inspection, tests, and conclusions.

Another set of 18650 batteries. They don't really stand out among the dozens I've tested, except for their slightly higher rated capacity and lower current rating than the well-known VTC6, HG2, and 30Q, which I'll compare them with at the end of the review.

It's been a while since I wrote a "not a review," and a friend just sent me a link to a new product from Atorch, the logical continuation of the DL24 series. I wrote about it earlier in a similar "not a review" and in a more in-depth article with an example of how to build a power module for it. So today, here's a brief announcement of their new product.

Another power supply I was asked to test. I was interested in it myself, so I ordered one for a review. As usual: inspection, schematic, tests, conclusions.