Instead of the introduction: in the grammar dictionaries of the Russian language there are no definitions of the words “stroba” or “strobe”. The online service “” does not know them either.

But the Wikipedia joint folk art encyclopedia combines these two terms into one name and sends it to the technical literature: PUE, GOST 21.201-2011.

In these documents, the term "furrow" is used, which is created in the walls to hide electrical wiring or pipelines. This technique not only improves the design of the premises, but also creates additional mechanical protection for the laid communications from damage. However, in colloquial speech among electricians, the word "strobe" is more familiar. A professional tool for cutting them is called a chisel cutter even by manufacturers. Therefore, in the article we will adhere to the prevailing folk traditions ...

The thermostat is a control device to maintain a certain temperature with a given accuracy. It can be useful in various automation systems (refrigerator, greenhouse, pipe heating, boiler, ventilation, cars, etc.).

The thermostat was ordered here with a reliable one, that this time they will send something way. I admit that I am skeptical of such devices - I'm used to working with serious multifunction devices, so I will be very critical.

Board dimensions: 50x40x16mm. The workmanship was pleasantly surprised, the board is almost washed, the installation is neat, all the details are in place. However, the design is inconvenient for embedding - the indicator and buttons are recessed in relation to the relay and connectors. In mind, they had to be placed on the back of the board. The setting range and temperature display is -50 ºС +110 ºС ...

Many homeowners are concerned about the proper operation of household appliances, the safety of electrical wiring, and the quality of incoming electricity. In this case, additional requirements arise: unification, economical work on the basis of the principles of effective energy-saving technologies, environmentally friendly, safe use of materials, convenient, ergonomic control.

All these issues are taken into account in the apartment’s power supply project, the preparation of which requires good knowledge of safety regulations, operation of electrical installations, the principles of operation of electrical appliances and their structures, including the latest developments. A home foreman with the technical skills of an electrician can undertake such work independently quite problematic. It is better to entrust its implementation to a specialized organization. The power supply project is ...

Technological progress does not stand still. Residents of multi-storey buildings in megacities are beginning to forget cases of prolonged blackouts and all the troubles associated with them. However, for the rest of the population this issue has not yet been completely resolved.

Backup power issues for owners of a detached private house or cottage are still relevant. Our state is not yet able to fully provide high-quality electricity.

To ensure the normal operation of household electrical appliances in the event of loss of external electrical energy, use: a set of batteries that create a total voltage of 12, 24, 36 or 48 volts and an inverter that converts the direct current of the battery into alternating 220V. Modern systems do not just do backups ...

Motion sensors are devices that respond to moving, rather than stationary, objects. In this they differ from the presence sensors configured to operate upon disappearance, disappearance of moving objects in the controlled area.

In other words, the device that controls the movement should work when a person is inside the observed space, when he moves or froze, but at least just moves his fingers. At the same time, presence control devices are triggered when people have completely left the room or there is a completely frozen person left in it who does not make any movements.

Both groups of these sensors can work on the basis of: capturing sound vibrations by sensitive acoustic systems, perceiving thermal radiation caused by the human body ...

Specialists of the All-Russian Research Institute of Inorganic Materials named after Academician A.A. Bochvara developed the technology for creating the latest super wires. The essence of the technology is the sequential assembly of bimetallic composite billets with their subsequent deformation. This makes it possible to incorporate tape niobium fibers with a thickness of only 6-10 nm into the matrix of an ordinary copper wire.

The result is a composite wire with a cross section of 2 by 3 mm, in which up to 400 million of these finest niobium fibers are present. The resulting wire is characterized by an anomalously high mechanical strength, significantly more than 500 MPa, and electrical conductivity at the level of 65-85% of the conductivity of pure copper, which is achieved by a small distance between the fibers, comparable with the average path length of the electrons in the copper matrix. Super wires are wires with tensile strength ...

A circuit breaker is a low-voltage protective device that protects electrical circuits from emergency operating conditions such as overload and short circuit, and also allows manual switching of electrical circuits under load. If the circuit breaker is structurally equipped with a motor-drive, then it can be controlled remotely or automatically by applying a signal from various automatic devices.

Circuit breakers are used quite widely, since the concept of "low-voltage circuits" includes not only power circuits supplying various electrical appliances and equipment, but also communication circuits, telemechanics of equipment, various auxiliary circuits with voltages up to 1000 V. In this article we present the features of choosing automatic circuit breaker by criteria such as the number of poles ...

Progress does not stand still, and LED lamps are rapidly appearing on store shelves, gradually displacing not only incandescent lamps, but also compact fluorescent lamps, so beloved by many of those who are used to scrupulously approach energy conservation.

However, compact fluorescent lamps (CFLs) require special measures when disposing of them, so not everything went smoothly with them. The LED lamp, in turn, is environmentally completely safe. Let's dwell in more detail on how to choose the right LED lamp, if necessary.

First of all, you should understand for yourself that it is not worth chasing cheapness when choosing an LED lamp, because a high-quality LED lamp can work for 50,000 hours. If you translate this into days, say 9 hours a day, you get more than 15 years ...