Stretch ceilings - one of the most popular options for finishing the ceiling in the house. One of the main advantages of suspended ceilings is the concealment of all irregularities, extraneous elements, including elements of home electrical wiring. It is very important to understand that the question of how to make wiring under a stretch ceiling must be resolved before the stretch ceiling is mounted, as there are often situations when during the repair process the issue of replacing or revising an existing wiring is neglected.

Subsequently, improperly installed electrical wiring or electrical wiring, which is in unsatisfactory technical condition, makes itself felt and there is a need to repair it, which entails additional costs for dismantling and installing the suspended ceiling in a room or throughout the house. Choosing a stretch ceiling as a finishing material ...

A voltage transformer is used to measure alternating voltage. This is a step-down transformer with two windings, the primary winding of which is connected to two points of the circuit, between which you need to measure the voltage, and the secondary - directly to the voltmeter. Measuring transformers in the diagrams are depicted as ordinary transformers.

A transformer without a loaded secondary winding operates in idle mode, and when a voltmeter is connected, the resistance of which is high, the transformer remains practically in this mode, and therefore the measured voltage can be considered proportional to the voltage applied to the primary winding, taking into account the transformation coefficient equal to the ratio of the number of turns in its secondary and primary windings. In this way, a high voltage can be measured, while a small safe voltage is applied to the device ...

Mobile technology has tightly entered our daily lives, and the advent of wireless chargers is quite natural. After all, electronic consumer devices (such as smartphones, for example) should ideally work for a long time and without failures, while it is not very convenient to plug the plug into an outlet every time, and the plug into the gadget when you need to recharge it. A set of wireless interfaces (Wi-Fi, Bluetooth, etc.) has long become a familiar attribute of many portable devices, so why not include an interface for wireless charging in this set? And modern technology has allowed this to be realized.

Of course, when charging wirelessly, the rechargeable mobile device should be at least 4 cm from the charger, but you must agree, this is more convenient than a wire extending from the plug. Sometimes during recharging there is a need to take a call, move away from the charger ...

In the summer of 2016, one of the founders and the current head of Tesla Motors, Elon Musk, proposed the merger of SolarCity and Tesla Motors. The leader in the installation of solar panels in California, the energy company SolarCity, has for ten years held a high leadership position, and today it is second in the United States. And so, before the end of the year, November 17, an effective meeting of Ilon Mask with shareholders took place, the merger was resolved positively, and all that remained was to settle the legal side of this grandiose promising step.

According to the plan of the Mask, in the summer of 2017, consumers will be given the opportunity to buy Solar Roof shingles for their homes.The tile will be a prefabricated solar panel, and in appearance from the ground it will be very similar to ordinary tiles, with the only difference being that the roof will now be able to generate electricity ...

Air conditioners familiar to all of us remarkably create coolness on a hot day, but besides this, many modern models are also capable of heating indoor air. When choosing a model of air conditioner for a country house, it is useful to remember this, because using the air conditioner, in some regions, you can get an excellent alternative to traditional water heating. And most air conditioners offered to consumers today are already able to cope with this task with a bang.

A system equipped with a heat pump is called an inverter system, since there is the possibility of its functioning not only to create cold, but also to create heat - that is, the system is operable in two directions. Of course, such models are somewhat more expensive (for example, McQuay or Mitsubishi Electric brands), but payback in the off-season would be obvious, because the heater would require much more electricity to solve the same problems ...

There are many installations, electric drives, technologies, where power supply requires not an alternating, but a constant voltage. Such installations include various industrial machines, construction equipment, electric transport engines (metro, trolley bus, loader, electric car), and other DC installations of various kinds. The supply voltage for some of these devices must be variable so that, for example, a changing current supply to the electric motor leads to a corresponding change in the speed of rotation of its rotor.

One of the first ways to regulate DC voltage is to regulate with a rheostat. Then we can recall the circuit engine - generator - engine, where again, by adjusting the current in the excitation winding of the generator, a change in operating parameters was achieved final engine. But these systems are not economical ...

Modern LED lamps can be classified according to several criteria: by the purpose of the lamp, by the type of its design, by the type of cap, and by the properties of the emitted light.

By designation, LED lamps are divided into: lamps for basic lighting in residential premises, lamps for local design lights, lamps for exterior architectural lighting and landscape design, lamps for use in explosive atmospheres, lamps for lighting streets, parking lots, bridges, sidewalks, railway stations and etc., lamps for floodlights that are installed on industrial buildings and territories.

By type, depending on other properties, LED lamps are divided into: general-purpose lamps for residential and office premises, directional lamps for spotlights, which are applicable both for local illumination of building interiors ...

The bright lights of garlands on the streets, shop windows, building facades, on trees create a unique holiday atmosphere that captivates and gives the New Year holidays fabulous magic. In addition to beauty, New Year's garlands also carry a hidden danger, as they are consumers of electrical energy and, like any other electrical appliance, must be operated in compliance with certain rules.

The correct connection of the garland to the electric network is the key to its long and, most importantly, safe operation.Very often gross errors are made when connecting a garland on the street, which can lead to negative consequences: which, at best, are limited to damage to the garland or various electrical components, but also the possibility of fire or electric shock ...