Asynchronous motors are widely used in industry due to the relative simplicity of design, good performance, ease of control.

Such devices often fall into the hands of a home master and he, using knowledge of the basics of electrical engineering, connects such an electric motor to work from a single-phase 220 volt network. Most often it is used for emery, wood processing, grain grinding and other simple work.

Even on individual industrial machines and mechanisms with drives, there are samples of various engines that can operate on one or three phases. Most often, they use a capacitor start, as the most simple and acceptable, although this is not the only method known to most competent electricians. Industrial asynchronous electrical devices ...

Non-contact thermometers or pyrometers are today convenient devices for remote temperature measurement of various objects, liquids or solids. They are widely used in the power industry for the operational control of the temperature of important areas, in the electric power industry to ensure fire safety, in laboratory conditions, in enterprises, in construction for calculating heat losses, in everyday life, in security systems, and much more.

The first such device was invented back in 1731 by the Dutch physicist Peter van Mushenbrook, and the measurements were made visually, it was possible to judge the temperature of a red-hot body. But modern types of pyrometers have greatly expanded the scope of their application, and even measure temperatures close to zero degrees Celsius and below. However, the principle remained generally the same ...

Color insulation of conductors today is an integral attribute for the successful and proper installation of electrical wiring. Such a solution is by no means a way to make the wires beautiful and attractive to the consumer, it is a convenient color marking, standardized and regulated throughout the civilized world, which is, without exaggeration, a necessity.

The color marking of the wires gives an exact designation to each conductor, the color of the insulation of the core marks its purpose in a group of several conductors, and facilitates the process of switching and installation. This solution eliminates errors that may occur during installation, which could lead to a fatal electric shock or short circuit. Repairing and maintaining electrical networks also becomes safer if the wires are precisely labeled ...

The metering of consumed electricity is carried out by measuring instruments that take into account the power passing through them for a calculated period of time. In order to correctly install and connect an electric meter, it is necessary to understand the principle of its operation, which consists in constantly monitoring such parameters as: the magnitude of the load flowing through the current measuring organ, the value of the voltage supplied to the input of the controlled electric circuit, and the connection time.

Any electric meter, regardless of its design, has: a terminal block on which electricity is supplied and simultaneously removed (input and output circuits), an internal circuit. When connecting the wires to the terminal strip, it is important not only to switch the phase and neutral conductors to their places, but also to observe the polarity: incoming and outgoing circuits ...

It is impossible to imagine a modern house without electricity: it is light, heat, television, the Internet and many other benefits of civilization that make our life comfortable. Like any other creation of human hands, an electrician tends to fail, and sooner or later we will encounter this problem. What if, as they say, "jammed"? How to install a lamp or hang a chandelier? How to replace a loose switch or socket? How to connect and insulate the wire?

Any of the above problems can be dealt with yourself. Good help in this can be provided by Igor Ekimov’s new book "Electrics. Ready-made solutions for your home." The book was published by Eksmo Publishing House and consists of detailed step-by-step photo instructions.thanks to which you can independently carry out the majority of electrical work.The main advantage of the book is its practical orientation. ...

Today, the Tesla transformer is called a high-frequency high-voltage resonant transformer, and in the network you can find many examples of vivid implementations of this unusual device. A coil without a ferromagnetic core, consisting of many turns of a thin wire, crowned with a torus, emits real lightning, impressing amazed spectators. But do everyone remember how and why this amazing device was originally created?

The history of this invention begins from the end of the 19th century, when the ingenious scientist-experimenter Nikola Tesla, working in the United States, only set himself the task of learning how to transmit electrical energy over long distances without wires. It is hardly possible to pinpoint the exact year when this idea came to the scientist for sure, but it is known that on May 20, 1891, Nikola Tesla delivered a detailed lecture at Columbia University ...

On October 2, 2015, Google finally became part of the Alphabet holding, in connection with which the management of some projects was reorganized. This has affected all projects that are part of Google X, which is engaged in almost secret laboratory developments in the field of advanced technologies.

One of the most ambitious projects that Google X has been pursuing for several years is the development of technologies that make clean energy sources more accessible. So, in 2013, the technology giant acquired Makani Power, a wind turbine manufacturer, so that Google X’s efforts to develop one of its key areas become even more productive.

But Makani Power is not ordinary wind turbines, not the kind used everywhere in windmills. Developed by Alameda (California, USA), the devices are on-board units ...

What to do if the electric stove does not work? To answer this question, we consider the characteristic signs of typical malfunctions of electric stoves: the oven and burners do not heat up at all, the indicators do not light up, one of the burners or the oven does not heat up at all, or it does not heat up enough, the heating of the oven or burner does not correspond to the switch position, it does not work backlight in the oven.

Obviously, all these symptoms indicate the absence or lack of current in a particular electrical circuit of a household appliance. But before proceeding with the diagnosis, the first thing to do is disconnect the stove from the network, and only then start the search for the defect. If nothing is warming up, the bulbs (neither indicator, nor in the oven) do not light up, there is no reaction to the turn of the switches, which means that power is not supplied to the stove from the mains. Check if there is voltage at the outlet. To do this, first make sure ...