This review will focus on smart GSM sockets. GSM sockets are devices for expanding home automation. At the moment, the range of such outlets is quite wide, and it is not surprising that they have already gained some popularity among discerning consumers.

For example, consider three models from three manufacturers, so that anyone who hears about these devices for the first time can form a clear idea of ​​what kind of devices they are, how they work, and what opportunities they open up. Each of the models presented in the review is unique in its own way and has its own characteristics. This model is an improved version of the device from the Russian company Senseit. It supports management from an application for iOS or Android, and there is no longer any need to send SMS commandsas it was in the first version of the outlet ...

Despite the fact that track lights are an innovation, they have already gained popularity thanks to a number of undeniable advantages compared to conventional ceiling lights. So, track LED lamps are already widely used for decoration of offices, houses, industrial workplaces, shopping centers, etc. Their aesthetic appearance makes it easy to fit such lamps into any interior with the ability to adjust the contrast and gradation of light.

Leading manufacturers today have an extensive range of LED, halogen, metal halide, sodium and fluorescent track lights. Track lights differ in design, construction, color performance, type of reflectors and a number of other individual features. The track system of luminaires is formed by an aluminum busbar or a U-shaped conductor ...

There are many different types of capacitors in the electronic components market today, and each type has its own advantages and disadvantages. Some are capable of operating at high voltages, others are notable for significant capacitance, others have a low inductance, and some are characterized by an exceptionally low leakage current. All these factors determine the application of specific types of capacitors.

Consider what types of capacitors are. In general, there are a lot of them, but here we will consider the main popular types of capacitors, and we will figure out how to determine this type. Aluminum electrolytic capacitors, for example K50-35 or K50-29, consist of two thin strips of aluminum twisted into a roll, between which paper impregnated with electrolyte is placed. The roll is placed in a sealed aluminum cylinder, at one of the ends of which contact pins are located ...

For heating an individual residential building, systems that use the transfer of liquid coolant through pipelines to heating batteries, in which heat is transferred to the surrounding air and return of the cooled liquid back for subsequent heating, are becoming more and more used. In this case, a boiler is usually understood as a sealed metal vessel in which the coolant is heated, and the term “electric” defines the type of energy used.

According to the principle of the use of electricity, boilers are of indirect heating, direct action and induction type. They have a completely different design, differ in degrees of safety, require a different attitude when connected to the wiring.The term "indirect action" means indirect heating carried out by an electric current passing through a heating element with a purely resistive resistance ...

It would seem that just recently, having opened any apartment shield, you could find there only a counter with a couple of traffic jams, but modern panels have already gone quite far from their Soviet predecessors. The same compact machines, in much larger quantities than steam, and other electrical equipment, are now mounted in panels exclusively on a DIN rail.

Many modular elements, such as starters, relays, controllers, switches, timers, RCDs and more, can be assembled into blocks today by mounting them on a DIN rail - a brilliant invention of the German Institute for Standardization. This is a simple-looking perforated or solid profile made of steel or aluminum, characterized by the current of the ground terminal, strength and weight. DIN rails are available in different lengths, they can be divided into shorter pieces as needed, for this a marking in the form of a notch can be applied to a long rail. DIN rails and profile shape vary ...

Lighting accounts for a large share of energy consumption worldwide, for example, it is estimated that about 12 percent of total electricity consumption is accounted for by lighting. The reason is that the traditional incandescent bulbs that are very common today (Ilyich’s bulb here, or Edison’s bulb in the USA) consume a lot of energy, 90 percent of the energy is simply lost in them in the form of heat.

The main alternative to this day were only compact fluorescent lamps and LEDs, which, consuming significantly less electricity, can produce as much light as incandescent lamps. However, the fourth lighting option is approaching, and the technology called FIPEL is rightfully considered the first in the last 30 years, claiming the title of a new technology of energy-saving lighting. FIPEL from Field-induced polymer electroluminescent (field-induced polymer electroluminescence) ...

Any light source is a source of luminous flux, and the larger the luminous flux falls on the surface of the illuminated object, the better this object is visible. And a physical quantity numerically equal to the luminous flux incident on a unit area of ​​the illuminated surface is called illumination.

Illumination is denoted by the symbol E, and its value is found by the formula E = Ф / S, where Ф is the light flux, and S is the area of ​​the illuminated surface. In the SI system, illumination is measured in Luxes (Lx), and one Lux is such illumination at which the luminous flux incident on one square meter of the illuminated body is equal to one Lumen. That is, 1 Lux = 1 Lumen / 1 Sq.m. As an example, here are some typical illumination values: a sunny day in the middle latitudes - 100,000 Lx, a cloudy day in the middle latitudes - 1000 Lx, a bright room illuminated by the sun ...

Any electrician periodically encounters the need to lay electrical wiring inside concrete or brick walls, which have to be drilled or ditched. Performing such tasks is more convenient with a specially designed rotary hammer.

In order to successfully select his model for work, we suggest that you familiarize yourself with the features of various designs and a list of technical solutions for their implementation, embodied in the diverse designs of rotary hammers produced by modern manufacturers.

The puncher is created for making holes in concrete, brick, stone building structures of increased strength by the method of applying mechanical impacts to a nozzle that performs a combined translational-rotational movement. Additional tasks of the punch are: drilling holes in various materials due to the function of a drill, applying a long series of axial impacts ...