“The solar battery can be glued to anything from portable power supplies for gadgets to smart clothes and even autonomous space suits of astronauts,” said Xiaolin Zheng, an article published in Scientific Reports.

The combination of thin-film electronics with new solar panels will open up possibilities for creating new technical devices, and this is only the first stage in the development of this technology. The technology “tear off and decal” can be used completely versatile, assured the head of the team of physicists at Stanford University Xiaolin Zheng.

Zheng with like-minded people developed and reproduced real solar-battery stickers, which were the result of experiments with films of silicon oxide and nickel of nanometer thickness. Scientists explain that solar panels can traditionally work fine ...

Industrial and residential wiring is carried out in one of two ways of laying: hidden inside wall structures and outdoor installation. Under each of these types, junction boxes, sockets and switches are also available, which are also called electrical points or network connection nodes.

During their installation, many home masters focus on the design of the room and ease of use. However, it is worth considering such requirements for electrical characteristics as: reliable contact joints providing high-quality electric power transmission with minimal voltage losses, durable electrical insulation of current-carrying conductors and structural elements that are under network potential, operation safety, including ease of operation, access restrictions, fire protection. In the old Soviet-built houses inside the walls created emptiness channels and outlet openings ...

At first glance, the winding is a piece of wire wound in a certain way and there is nothing much to break in it. But it has features: strict selection of homogeneous material along the entire length, accurate calibration of the shape and cross section, application of a varnish layer with high insulating properties in the factory, strong contact joints. If at any point in the wire any of these requirements is violated, the conditions for the passage of electric current change and the engine starts to work with reduced power or stops altogether.

To test one winding of a three-phase motor, disconnect it from other circuits. In all electric motors, they can be assembled according to one of two schemes: a star and a triangle. The ends of the windings are usually output to the terminal blocks and are marked with the letters "H" (beginning) and "K" (end). Sometimes individual compounds can be hidden ...

In our daily lives, we constantly encounter various electrical appliances that greatly facilitate our activities. Almost all of them have in their design an engine powered by electricity to perform a certain job. Sometimes, for various reasons, malfunctions arise in it. It is necessary to determine its performance, to identify and repair damage.

Immediately make a reservation that we will not resort to complex technical descriptions and formulas, but try to use simplified schemes and terminology. We also take into account that working with electric motors in electrical installations is dangerous. They are allowed trained, trained personnel. By mechanical design, any electric motor can be imaginedconsisting of only two parts: stationary fixed, which is called a statorand attached to the machine body...

University of Washington engineers have developed a technology that allows you to use Wi-Fi as an energy source to power portable devices and charge gadgets. The technology has already been recognized by Popular Science magazine as one of the best innovations of 2015.

The ubiquitous adoption of wireless data technology has revolutionized itself, and now it’s the turn of wireless power transmission over the air, which developers at the University of Washington called PoWiFi (from Power Over WiFi).

At the testing stage, the researchers were able to successfully charge small-capacity lithium-ion and nickel-metal hydride batteries using the Asus RT-AC68U router and several sensors located at a distance of 8.5 meters from it. These sensors just convert energy ...

The term "spotlight" explains the explanatory dictionary of the Russian language as a lighting device, consisting of a system of mirrors or optical lenses, designed to create a strong stream of directional light focused in a limited angle.

It has a large blinding effect and, when installed on vehicles, it must be switched off when the oncoming stream is much earlier than the main beam headlights. Such structures are practically not used to illuminate the entrance to buildings.

Over the past two decades, streetlights have come to be called ordinary street lights, illuminating the territory at a wide angle and having a power of 50, 20 and even 10 watts. They are equipped with economical LED sources, motion and light sensors. In most cases, they are already factory-installed and prepared for joint work. It is enough for the end user to connect power wires to them ... 

In a private house, pumping equipment is used to ensure the operability of the heating system, water supply system. In the heating system, a circulation pump ensures the circulation of the coolant from the boiler through pipelines and radiators connected to them throughout the house.

In the absence of a centralized water supply, water is supplied to the house by pumping it out with a submersible or surface pump from a well or a well. That is, we can conclude that pumping equipment is an integral element of these communications of a private house.

Pumping equipment receives power from the electrical network, so in the event of a power outage the house will be left without the necessary communications for life: the coolant will not circulate through the heating system, and there will be no water in the tap ...

Lighting in any bath should not only be cozy and comfortable, but also completely safe. What is this security? First of all, it should be remembered that the fixtures for the bath should not only be heat-resistant, but also waterproof.

The degree of protection of the enclosure class IP54 and higher is quite suitable for the second parameter, but heat resistance up to 125 degrees must be indicated in the passport of the selected product. If both conditions are met, then lighting the bathhouse or sauna will be not only safe, but also reliable, regardless of whether you choose a very simple model of the lamp or expensive. If the lamp has a lampshade, then it must be made of heat-resistant and moisture-resistant material, as well as a diffuser. A ceramic case is one of the best solutions.Ceramic lamp with frosted glass will give an even soft light...