Electronics and technology blog    /    Materials for December 2020 year

Thanks to one of my regular readers, I got my hands on a WZ5005 voltage converter. I wouldn't say it has anything particularly special going for it, but it could be an alternative to the popular DPS models from RuiDeng. More on that in the review.

Some time ago, news emerged of a new FNB48 USB tester from Fnirsi, a young but fast-growing company. I thought this model looked interesting, so I decided to order one for a review. I was also curious to compare it with other testers, such as the rather expensive ZY1276 from YZXstudio.

One of the readers sent me a link to a deal that I think is quite interesting price-wise.

RuiDeng continues to develop its line of adjustable voltage converters, the RD60xx series, and news of a new model appeared not long ago. But instead of the expected RD6024 with a 24 A output current, which was supposed to follow the RD6018 in the lineup, I decided to take a small “step back” and return to the 6006 model.

I’m often asked about various battery packs, and the questions are about both battery protection and balancing. I needed a battery pack, a protection board, and a balancer for a UPS conversion project. The battery is still on its way, and there’s no point testing the protection board without it, so today I’ll tell you about the balancer.

2020 is coming to an end, and at readers’ request I’ve decided to bring together all my battery reviews from this year in one article. They’ll be heavily condensed, of course—the goal isn’t to show everything, but to provide a kind of “digest.” I published a similar article last year, but back then almost all the batteries were name-brand ones from Nkon, whereas most of these are from AliExpress. Warning: VERY large amount of data ahead!!

About a year ago, information about a new battery model, the INR18650-25S from Samsung, started appearing more and more often. Naturally, it caught my interest, so I bought a couple to test. Today I'll tell you how they performed.

Today I'm reviewing a timer that looks quite ordinary, but can do more than simply run for set time intervals: it can also switch according to sunrise and sunset times, which can be more convenient than a conventional photocell relay in some situations.