Electronics and technology blog    /    All publication of the user kirich    /    Page 46

Today's mini-review is about four different camera batteries. They look different, but their specifications are remarkably similar. Still, it's better to see for yourself.

At the end of last year, I published a review of a basic video surveillance kit consisting of four IP cameras and a DVR. At the time, someone also “hinted” that there was an alternative in the form of AHD cameras. In this review, I’ll try to explain what AHD is, how it works, and what the standard is all about.

Last month I posted a review of the Szsinocam camera, and mentioned then that I was planning to write another review on the subject. In the end, I decided not just to review one camera, but to compare it in part not only with the Szsinocam, but also with a camera from the well-known Hikvision brand. Hope you find it interesting :)

Some time ago, I got my hands on a rather interesting smartphone. Somehow, I never got around to telling you about it. Time went by, and every now and then I sat down to work on the review, but I only decided to finish it now. But first things first.

Today's brief review is about a fairly ordinary tool: drill bits. There's not much to say about them, and what could you possibly tell people about a small twist drill bit that they don't already know? Still, as usual, I'll take a look at them and try to put them through some kind of test :)

I’d come across information several times about connecting a smartphone or tablet to a TV using something like AirPlay/DLNA/Miracast. I got curious, bought one, gave it a try, and decided to tell you about it :)

Continuing my series on power supplies, I ordered another one, this time more powerful than the previous one. This review won't be very long, but as always, I'll inspect it, take it apart, and test it.

I've taken apart and tested quite a few small computers and tablets, and I can say with confidence that overheating is the bane of the vast majority of these devices. But not long ago, I got my hands on a device that doesn't overheat, and I was pleasantly surprised. But is everything else just as good? Let's take a look, test it, and take it apart—as usual.

I was browsing the Gearbest website and happened to come across this flash drive. I liked that it has two different connectors. Since both types of connection are common these days, I thought it might come in handy. And then, as usual, I ordered it, received it, and put together a short review :)

I've reviewed quite a few different power supplies, and this is probably my favorite topic. But somehow I've almost completely overlooked one category of devices: uninterruptible power supplies, even though I do have one review on the subject. The device made a good first impression, but the reality turned out to be considerably more complicated. Anyway, as always, more after the jump.

I happened to come across several IP cameras at a well-known store and decided to try one out. You can find out what I ended up "trying out", as well as what it looks like inside and out, in this review.

Today I decided to write a short review of my latest batch of the well-known Panasonic NCR18650B batteries with protection. I thought it was a useful topic, so I decided to share my experience.

My first—and until recently, only—jigsaw came along about 8 years ago. It helped me out quite a lot and got a little "tired," so I wanted to get it something newer and possibly better to help out. Today I'm going to talk about a STANLEY jigsaw, although things aren't quite that simple.

I've already posted several reviews of different soldering irons, from the simplest to some pretty sophisticated models. This time, though, I'll be looking at a more versatile option in this category of tools for electronics hobbyists.

Somehow, despite using a relatively large number of mobile devices, I get by without any extra “power banks.” Though it would be more accurate to say I get by without the kind most people are used to, since I do have a 12 V version. In this case, I was simply offered this Powerbank to review, and I thought—why not? At the very least, I can see how it’s made. As always, next up: inspection, teardown, testing, and modifications.

It's been a while since I last wrote about power supplies, even though they're one of my favorite topics. I also somehow overlooked power supplies with the common output voltage of 12 V. This time, I decided to kill two birds with one stone and take a look inside a 12 V power supply with passive cooling. As always, the inspection, tests, and conclusions are below the fold.

I once wrote a review of a cordless drill from MILWAUKEE, where I described modifying its original charger. Here, I decided to put the modification instructions in a separate, short post.

About a year and a half ago, I wrote an article about a homemade (well, almost) electronic load, and I’ve finally decided to take the project further.