Almost all modern technological equipment is automated. These are CNC machines, injection molding machines, various automatic lines, automated boiler rooms, water and sewage pumping stations, gas pipelines, power supply systems and much more. A lot of automated equipment at metallurgical plants, in transport in mechanical engineering and in the automotive industry.

Modern automation is most often performed on microcontroller control circuits, which replaced the control units on microcircuits of a small degree of integration. And this is not just a fashion or a tribute to time. Such a replacement allows you to automate almost everything. But the microcontroller is not everything. Typically, automated equipment is connected to a computer, which in turn is connected to a computer network. Not only production equipment is being automated ...

Probably everyone saw the usual mechanical valve. It is enough in any courtyard of an apartment building to look at the heating main to see at least two gate valves at once.

Even without going into much of their design, and having no higher technical education, it is easy to understand that if you turn the handwheel, a shutter moves inside the pipe, which blocks the flow of water. It is from this that such a mechanism of pipe-and-valve valves “moves” and is called the “valve”. The device of a small mechanical valve is shown in the figure.

The use of such "manual" valves is justified only in those cases when the valve is used very rarely, from case to case, and their number is small. For example, block the pipeline section in the event of an accident. Well, a distribution pipe or riser flowed somewhere in the basement of the house ...

Many of those who turned electronics into an entertaining pastime often ask themselves the question: “Why am I doing this?” I read magazines and books from the section “Electronics is Simple” and other literature from the series “For Dummies”. More sophisticated and clever books simply lack patience.

And then the reasoning goes approximately along this line: here, they say, made a simple amplifier, assembled several flashing lights (light effects), a charger. But it turns out that all this can be bought, if not new, then at least used, and it will turn out to be of better quality, in branded cases, even in working condition. The question is, where is the benefit, the economic effect of such occupations?

But perhaps you should not bother with such thoughts. After all, there are many examples that do not bring any benefits. These activities are called hobbies, i.e. a hobby in which one should hardly look for meaning ...

With electricity you need to be on you !!! (time-tested wisdom).

Many probably heard that a real electrician is not one that is not afraid of electricity, but one that is able to avoid direct contact with electricity. According to statistics, from electric shock, most often die electricians with experience of ten years or more. It is at this age that a sense of danger is dulled. Some experienced electricians test the presence of electricity by touch, yes, it is by touch. But why risk your own life when there are devices showing the presence of voltage?

There are a lot of devices showing the presence of voltage - from the simplest voltage indicator on a gas discharge lamp (neonka) to devices showing not only the presence of voltage but also many other parameters.In this article we will consider indicators and voltage indicators ...

There are a lot of professions related to electrical engineering today. But we must admit that the level of requirements for the performer in these professions is very different.

As an example, many well-known electricians who serve some household or office buildings and are mainly involved in replacing bulbs can be cited. And they can be opposed by specialists repairing complex equipment, which incorporates power electronic conversion equipment.

Both those and others - on "you" with electricity, have an electrical safety approval group (possibly even the same one). Both are skilled workers. But even with a cursory examination, the differences in the qualifications of these specialists are visible to everyone. With all due respect to ZhEKovsky electricians, to electricians producing ...

Any construction begins with the project. Suppose we have two brick cars, a cement car, a car of various pipes, and a floor of a car of electric cables. What, first of all, do we need to do to build a house, a production hall or a stadium from all this diverse material?

During the construction, hundreds of people of various specialties simultaneously perform their work, and as a result of their joint work, a beautiful and convenient building is erected. In order to make this possible, before the construction of any building or structure, the sacrament of design takes place.

Long before the start of construction, architects and designers come to the place of future construction. Architects are primarily responsible for the beauty of the future building. They are needed, first of all, where special requirements are made to the facades of buildings and their interior decoration ...

Justification of the choice of the profession of an electrician, based on personal experience, official statistics and the results.

Every time dictates not only fashionable clothes, but also fashionable professions. At the beginning of the last century, in the era of the GOELRO plan, electricians were worth their weight in gold and they were admired as fairy-tale heroes. But "... Times do not choose, they live and die in them." and in our time there is only one very “popular” red electrician Chu. Thanks to his efforts, according to experts, the industry rolled back fifty years ago.

From year to year, the sphere of higher education spits out a huge number of economists, lawyers, artists, managers of various kinds on the labor market, but at the moment there are sorely lacking engineers and electrical engineers in particular. We need technical specialists with experience in the profession. Engineers and workers, the prestige of the profession of the latter is especially underestimated ...

Some electronic devices are galvanically isolated from the lighting network. Therefore, compliance with safety regulations will not be superfluous, but this is a topic for another article, and many articles have already been written, anyone who wishes can read on their own.

The element base is what electronic circuits consist of, in other words, these are parts that are soldered onto printed circuit boards. And the entire elemental base cannot be described even in a huge thick book: for example, the online store of radio components “Elitan” offers customers more than a million items of goods from more than a thousand manufacturers from around the world.

Almost all modern electronic equipment is assembled on imported, quite simply, bourgeois element base. But in this regard, one should not particularly be upset, since the documentation for almost all microcircuits ...