Electronics and technology blog    /    Materials for June 2017 year    /    Page 2

Today we'll look at the next stage after the inverter: the power transformer. This won't be a very long article, but I think it'll be useful.

At the end of last year, I published a couple of reviews about converting cordless drill batteries. Today, I’ll tell you about an alternative way to charge a converted battery using a ready-made charger. As usual, we’ll take a look, take it apart, and go through the schematics and tests.

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A couple of years ago, I published a review of a compact USB hub. It works fine, and I have no complaints about it, but after using it for a while, I found it wasn't very convenient for me. This time, I picked a USB hub from a different manufacturer to review. It has a slightly different port layout, but I also found out along the way that it's an updated version of hubs from this manufacturer that I reviewed earlier.

3D pens have been gaining popularity lately, but quite a lot of people still have only a vague idea of what they are and what they’re for.

Not so long ago, you could still call the Amlogic S912 SoC brand-new. But time flies, and it has become so common that a review of an S912-based TV box is no longer anything special. So I’ll try not to drag this out too much.

Last time, I covered the input stage of a switching power supply, the bridge rectifier, and the filter capacitors. Now it’s time for the next stage: the inverter. This is the most complex and extensive part, but also the most useful.

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Sale categories: #1 Xiaomi Sellers, Hot June Picks, Ultimate Discounts. Total number of products on sale: 20. Products with quantity limits: 20 out of 20.

Sale categories: Bestselling Deals, DEALS UNDER $3.99. Total number of products in the sale at promotional prices: 44. Products with quantity limits: 44 out of 44.

Sale categories: TOP SELLERS, COOL RC TOYS, OUTDOOR GEAR, MULTI ROTOR PARTS, FIDGET SPINNERS. Total number of items on sale: 72. Items at reduced prices: 72 out of 72.

Sale categories: WLtoys Bestsellers, Powerhouse RC, Extreme RC Cars, Cute Toys. Total number of products in the sale: 32. Products at reduced prices: 32 of 32.

Sale categories: HOT SALE, COOL RC, SPEEDY RC CARS, FIDGET SPINNERS, AWESOME ITEMS. Total products in the sale at promotional prices: 36. Discounted products: 28 out of 36. Products with quantity limits: 8 out of 36.

Sale categories: #1 BESTSELLERS, CLEARANCE SALE, Other Cool Deals. Total number of items on sale: 16. Items with quantity limits: 16 out of 16.

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Sale categories: Leagoo Super Deals. Total number of items in the sale at promotional prices: 8. Items at reduced prices: 8 out of 8.

Not long ago, I was asked to write a little review of an IRULU product. I decided to give it a try out of curiosity. A quick heads-up: this is a very basic tablet, but I’ll test it just like all the others. And of course, there’ll be a teardown.