How to extend the "life" of batteries and how to increase the number of charge / discharge cycles.

Most of the devices around us use electrical energy to operate. In most cases, they completely lack an electric network, especially household appliances. But, in the situation with personal electronics and other portable devices, you need a rechargeable battery that could provide the device with the right amount of energy outside the home.

For a long time, for the manufacture of batteries used technologies that have a number of disadvantages. But, starting in 1992, lithium batteries (lithium-ion and lithium-polymer) began to prevail in mass production. What can be done to extend the life of lithium batteries? We’ll talk about this today ...

In the era of computers, old things from the USSR, on which you can make good money, are becoming increasingly valuable. An article on radio equipment, key features of this business.

Restoring old radio equipment can be a very useful hobby. Especially now, in the age of cell phones and iPads. Today, among the true connoisseurs of antiques, it is becoming fashionable to assemble tube receivers and turntables. Workable equipment from the time of the USSR is readily bought by foreign collectors.

If you are familiar with electronics, or as a child visited a radio club, then understanding the circuit diagrams of devices will not be difficult for you. In addition, lacking knowledge can always be gleaned from books and the Internet. In general, the element base of Soviet-made radio equipment did not differ in variety ...

In the laboratory stands of my college, laboratory autotransformers (LATRs) regularly fail. It so happened that through trial and error I was able to master the technology of their repair. At the moment, I have managed to repair three laboratory autotransformers, and I did this in my room in the dormitory. I would be glad if the technology for rewinding LATRs described here is useful to someone. Yes, this is my first article, so do not judge strictly :-)

To begin with, a short course on the LATR device. LATR has two windings connected in series. Mains voltage is applied to the primary winding (this must be taken into account when rewinding). The secondary winding is connected to the primary. It is designed for voltages from 0-240 V. Voltage is applied to terminals A and N in the magnetic circuit, a magnetic flux is created which induces current in the windings ...

In previous articles, we examined how to automate the process of starting gasoline diesel or gas generators. Generators are most often placed indoors. One of the important, and for someone rather complicated moments of installation of mini-power plants, is the problem of exhaust gas exhaust. In this article, we will demonstrate step-by-step how to remove exhaust gases from the generator.

So what we have. Generator gasoline KAMA (KIPOR) KGE 6500 E. As already noted, a very successful model. Value for money is just super))). Corrugation. As a corrugation we use a bellows to connect hot water. As practice shows, three years of successful work are provided, the corrugation easily tolerates the high temperatures and vibrations of the generator. The paste is a sealant. In this case, asbestos-cement paste was used ...

There was an idea to make the swing gates yourself, as usual because of laziness. No wonder they say "laziness is the engine of progress."I decided to equip my garage swing gates with automation. The main issue arose with the drive.

When I found out how much what they put, it was a shock. And I’ll tell you why. If you pay 300 euros for two drives, well, excuse me, for what? Since I myself am engaged in satellite television, I decided to think a little bit unconventionally and cross “a camel with a rhino”.

As you know, in the old rotary systems of satellite dishes, a worm gear motor was used to extend the rod that drives the antenna. The principle of operation is the same as in the standard swing gate operator. Moreover, it seems to me that it even has its advantages. The drive needs 220V, and this one is powered through a transformer with a constant voltage of 36V ...

During repair and construction work, one cannot do without a power tool, the quality of the repair as a whole will depend on its quality. Therefore, it is very important to choose the right tool, which will be discussed further.

Today it is impossible to imagine apartment repair without using a power tool. Arriving at any specialized store, you can appreciate the huge variety of types of power tools, where each device has its own purpose and technical characteristics. Choosing a power tool is not an easy task. It’s not enough to understand that for drilling walls you need a drill or punch, you also need to understand the technical characteristics and capabilities of the tool. First of all, you need to determine for yourself which tool you need - professional or non-professional ...

Any sane person, before making any serious purchase, must determine the basic criteria that this product must meet. For example, when purchasing a refrigerator, you decide whether you need a freezer in it or not, the internal volume of the refrigerator, etc. The same goes for mini power plants for the home.

In this short article, we will consider the main points that you need to pay special attention to when choosing a generator.

So, the first thing you should pay attention to is, of course, the power of the generator. Not only the final cost of the generator set, but also the reliability of the entire power system of the house depends on how correctly and correctly you calculate the necessary load in the house, powered by a generator ...

The reliability of modern household electrical appliances is clearly poor. The older generation recalls with a sigh the iron that was ironing for 10 years, the TV, which worked for 15, and the refrigerator, which served as a grandmother. Examining objects of past years in the museum, their massiveness and strength are striking in comparison with the current flimsy and graceful.

It is difficult to say why the reliability of household appliances is decreasing every year. Probably because manufacturers choose cheapness between low-cost production and quality, even the most famous and trusted companies sin by using components from other manufacturers or even transferring production to Asian countries.

Thus, the purchase of a household appliance has long turned into a lottery. If you are lucky, it will serve for a long time, but if not? ...