The world's first thermoelectric material based on ordered nanotubes was developed by a group of scientists from the Department of Functional Nanosystems and High-Temperature Materials of the National University of Science and Technology “MISiS” in collaboration with researchers from the Swedish University of Technology Lulelo and the Jena University named after Friedrich Schiller. Information on innovative development was presented in the form of an article in the journal Advanced Functional Materials.

The new material has a polymer nature, so it is flexible. In addition, an additive made of nanotubes was used here, which greatly improves its electrical conductivity. The prospects for the material are colossal. In principle, it is applicable for charging mobile gadgets without the need for other traditional energy sources. A bracelet or case for a smartphone made of new material will allow you to charge small portable devices ...

In electrical engineering, it makes no sense to simply say “electricity”. Here it is always necessary to specify what exactly is being discussed. We can mean the electric charge of the capacitor, the voltage in the socket, the current flowing through the wires, or for example the power that the electric meter in our apartment wound in a month.

In any case, there is no such quantity as electricity, there is the quantity “amount of electricity”, correctly called the electric charge, which is measured in pendants. This is an electric charge - it moves along the wires, accumulates on the plates of the capacitor, is periodically present at the terminals (minimum - on the phase wire) of the outlet, moves in the form of current when the electric network performs work. The main electrical quantities are somehow related to the charge. We will talk about these values ​​today. Voltage is measured between two points in a circuit ...

The essence of the problem lies in the fact that precipitation and road dirt pose a threat (at least an obstacle) to the safe driving of the vehicle. In the end, it is simply not comfortable, and the driver himself would not want to be distracted by manually turning the wiper blades on and off, adjusting their operation, etc.

It is much better and more convenient if automation did this, and not the driver. Specialists have long been developing and improving systems to automate this process. And if earlier rain sensors were installed only on expensive cars, today they are available to almost everyone in the form of separate devices, and middle-class cars have recently often been equipped with them by default. A rain sensor is installed inside the car opposite the windshield ...

Recently, in parks and on the streets of our cities, especially in the dry and warm season, you can notice more and more electric scooters. Over the past few years, they have managed to turn from toys into a full-fledged means of individual transportation akin to a once-no-choice bicycle.

On an electric scooter, you can tirelessly maneuver along the sidewalk or even among cars in a traffic jam. It is always convenient to ride a scooter through the square, get to work on the shortest path, and there will be no problems finding a parking place, as is the case with scooters. Let's talk about the device of an electric scooter, pay attention to the principle of its operation.Just note that the received idea of ​​the general structure of the electric scooter does not guarantee that you will become a specialist in the service of this vehicle ...

An ultrasound scanner or multifunction protection device is designed to provide instant disconnection of network equipment, provided that there is a certain increase or decrease in voltage in the single-phase network from which this equipment is powered. Thus, the equipment of an apartment, garage, office, home, etc. is protected from the harmful effects of short-term power surges.

These jumps can be caused by factors such as the inclusion of electric motors, electromagnets, magnetic starters, powerful devices, etc. fed from the same network. A quick shutdown by means of an ultrasound device prevents equipment failure and can prevent a possible fire and, in some cases, even a fire . Being connected according to this scheme, an ultrasound transducer can serve as a pulse relay. If the neutral conductor breaks, the load is immediately turned off, and when the neutral conductor is connected again, the ultrasound transformer will turn on the load ...

At all times, mankind understood that day is necessarily the sun, and night is certainly darkness. Until the beginning of the twentieth century, for most people it was considered absolutely normal to work on the street during the daylight hours, while daylight illuminates everything around. But as soon as dusk came, everyone went home, and at night they went to bed.

Today everything has changed. Most people in the so-called civilized countries work in rooms with artificial lighting, and when the sun goes below the horizon, the more they turn on artificial light to work longer, stay awake, and go to bed later. Initially, people used fire to illuminate indoors: lamps, candles, torches. Later appeared oil, kerosene and gas lamps, and finally, the first electric lighting fixtures ...

At the end of 2018, the Digital Economy program was approved, according to which it is planned to deploy an internal infrastructure for collecting, processing, storing and providing data in Russia. This means that in the coming years the number of specialized data centers or data processing centers (DPCs) will increase in the country, and the demand for the electrification of such facilities will increase.

The main difficulty is that domestic standards for power supply of data centers are under development (now experts use the American standard TIA 942 and PUE). The construction of data centers in Russia is developing, but despite the growing experience in this area, engineers are faced with rather difficult issues. The TIA 942 standard identifies four levels of data warehouse reliability: Tier I, II, III, and IV. The first two are considered not very reliable, so they are not used for more or less large data centers ...

Any activity requires constant development, and wiring is no exception. It is important to constantly expand our professional horizons, especially regarding the equipment and materials used. We offer several facts about electrical engineering that will make any specialist think.

According to the Electrocable Association, every eleventh product on the low-voltage equipment market is fake. They copy everything, but the saddest thing is with cable and wire products (CAT) and circuit breakers. When choosing this equipment you need to be especially careful.So, in counterfeit cables, the cross section of copper conductors is underestimated, the content of copper can be significantly reduced in obviously poor-quality products. In order to choose the right cable of the desired cross-section, it is necessary to take into account the rated current and power of the devices ...