Electronics and technology blog    /    Materials for July 2019 year

So, I’m done reviewing batteries I already knew pretty well, and I’m moving on to models I’ve never tested before. I’ll start with the relatively new VTC5D series batteries. I hope this will be useful.

I won't go into a long account of the purchase this time—just a brief review of a couple of popular VTC6 cells. As a bonus, I'll compare them with cells sent to me earlier by one of my readers and bought from the same store, nkon.

I've already reviewed quite a few batteries from nkon, but those were sent to me by one of my readers. Now I've finally got around to buying from the store myself, and as it turns out, it's not difficult at all. But it's best to read all about it in the review.

Hello everyone! Today I’d like to share my thoughts on the first Bluetooth earphones from the well-known Chinese company KZ, which I’ve used extensively since the end of October 2018.

A friend once brought me a couple of batteries to test. He bought them from us, but as far as I know, they came from AliExpress, either from the Liitokala store or Charger Battery Store. In any case, they’re essentially the same batteries, so I thought, why not test them? It might come in handy for someone.

Recently, I wrote that I’d bought a selection of different electronic components at our local shop. Among them were electrolytic capacitors of various types, which I needed for a small modification to one of my converters. Today I’ll tell you how simply replacing a capacitor can significantly change a converter’s—or power supply’s—performance.

Someone sent me information about a Banggood sale, so I decided to share it with readers.

I’ve already reviewed a couple of laser distance meters, and now a friend wanted a simple model too. He ordered one for himself so he could try it out and, while he was at it, tell me about it and put together a short review.

It turns out that even the widespread arrival of switching power supplies in our lives—which I’ve told you about in many reviews—hasn’t managed to completely replace conventional transformers. They’re used where a switching power supply isn’t suitable because of its “quirks,” especially in linear power supplies, audio equipment, and many applications where interference is undesirable. Today, I’m going to talk about these transformers.