Most manufacturers of sockets, switches spend considerable money on ensuring maximum security for ordinary consumers and raising the level of comfort during the operation of electrical appliances.

For example, many manufacturers equip their sockets with protective curtains. It will not work to insert any foreign object other than the plug from electrical appliances into the outlet of the outlet.

These sockets are ideal for installation in apartments where young children grow. Because the curiosity of the kids is no secret, many of the kids constantly strive to stick something into the socket outlet. In addition, recently, almost everyone who makes repairs install sockets at a level of 35-40 cm from the floor. The presence of curtains also serves as additional protection against ingress of foreign objects, dust, moisture into the outlet mechanism ...

Each technical device has two birthdays: the discovery of the principle of operation and its implementation. The idea of ​​a transformer after seven years of hard work on the “transformation of magnetism into electricity” was given by Michael Faraday.

On August 29, 1831, Faraday described in his diary an experiment that later went into all physics textbooks. On an iron ring with a diameter of 15 cm and a thickness of 2 cm, the experimenter wound separately two wires with a length of 15 m and 18 m. When a current flowed along one of the windings, the hands of the galvanometer on the clamps of the other deflected!

The scientist called the simple device an "induction coil." When the battery was turned on, the current (needless to say, constant) gradually increased in the primary winding. A magnetic flux was induced in the iron ring, the magnitude of which also varied. A voltage appeared in the secondary winding. As soon as the magnetic flux reached its limit value, the "secondary" current disappeared ...

The article will be interesting to people who decided to independently change the wiring in the apartment, house.

If you believe the statistics, the average homeowner (sorry for the officialdom) makes cosmetic repairs every 3-5 years, major repairs - once every 8-12 years. What is a facelift? This is a replacement for wallpaper, painting the ceiling, walls, windows, batteries ... That is, repair without significant investments.

Overhaul implies something more that requires significant financial costs. With major repairs, many change plumbing, heating appliances, tiles in bathrooms and in the kitchen. Someone is changing the flooring. Instead of old linoleum, they lay a laminate. There are many options. Everyone makes repairs based on their financial capabilities.

During the repair process, do not forget about the wiring ...

After decades of research and long-term use to activate our cell phones, laptops and various power tools, lithium-ion batteries (Li-Ion) have become used in electric car technology, becoming a major milestone on the road to replacing petroleum fuels in vehicles.

According to scientists and experts, lithium-ion batteries took first place in the establishment of the prize for the title "Innovative Technology of 2010".

In recent years, electric hybrid cars have begun to gradually displace gasoline models from the international market, they have gained their advantageous position due to the safety of technologies that involve minimal emission of harmful exhaust gases into the atmosphere ...

Before choosing a circuit breaker, let's try to figure out what it is and what it is for.So, the circuit breaker is designed primarily to protect the supply lines, that is, the wires, from overload, short circuit.

Most often, to protect the home electrical network, we use machines of the VA series. VA series machines have two types of protection: thermal and electromagnetic. Almost all modern automatic devices are arranged almost the same way: an arcing chamber, a magnetic release and a bimetallic plate, a contact group, a linkage ...

Introductory article about logic chips. Describes number systems and the representation of a binary number using electrical signals.

The modern digital integrated circuit is a miniature electronic unit, the housing of which contains active and passive elements connected in a certain pattern. These are transistors, diodes, resistors and capacitors.

The number of elements in modern microcircuits can reach several hundred thousand and even millions of elements. It is enough to recall microprocessors, microcontrollers, memory chips.

To simply list all modern microcircuits, you will need not one article, but a whole rather thick book. In this article, we will consider microcircuits of small and medium degree of integration, mostly simple logic elements ...

RCD - residual current device. Many probably heard, but someone probably knows what this device is, what it is for and how it works. Without really going into the jungle of physics, we will briefly try to understand the device, the principles of operation of this RCD itself in simple human language.

So, as the name implies, this device is designed to protect against electric shock. The principle of operation of the device is based on a comparison of currents along the conductors at the input and output of the device. The currents must be equal. If there is a slight difference, the device “sees” it and immediately disconnects the load from the network. The response time, by standards, should be no more than 15-25 ms.

Now, in fact, we begin to review the reasons due to which, in practice, the operation of RCDs takes place ...

Some simple tricks that will greatly facilitate your work and keep your nerves when working with a hammer and nails.

It seems to be a simple job - driving nails. But for some people, this procedure is quite a difficult task. And, when it is necessary to urgently hammer a nail, according to the law of world swine, no one who knows how to do this is nearby. And so here are some tips for beginners to nail

1) Hold the hammer by the end of the handle. When striking, look at the nail head. Then the nail will not bend and go aside, and you will not hit the fingers.

2) It is necessary to hold a long nail with pliers in the middle, so that when hammering it does not bend ...

It is best to use a cable specially designed for this to power the luminaires. An ideal option would be to use an armored cable, such as a VBBSHV or AVBBSHV cable (aluminum conductors).

Such a cable, thanks to protective armor, is protected from accidental mechanical damage. The insulation of the cable from polyvinyl chloride plastic compound (PVC) will protect the cable from the aggressive effects of soil.

In addition to the armored cable, cable laying without armor is possible. But in this case, it is recommended to lay the cable in asbestos-cement or polyethylene pipes.

Many electricians use an ordinary corrugated pipe or metal hose to protect against mechanical damage. This, let's say, is not entirely correct ...

An adapter for connecting a PC computer and controllers with a current loop interface. It does not require scarce parts, it is available for manufacture even at home.

In 1969, the American Electronic Industries Association developed the RS-232C communications interface. Its initial purpose is to provide communication between computers that are remote over a long distance.

An analogue of this interface in Russia is called “Joint S2”. Communication between computers is carried out using modems, but at the same time, devices such as a “mouse,” which was also called “komovskaya,” as well as scanners and printers, were connected to computers via the RS-232C interface. Of course, all of them should have been able to connect via the RS-232C interface ...

Recessed spotlights today have become the same mundane normal thing in the interior of a house, apartment, office as an ordinary chandelier or fluorescent lamp.

Many probably paid attention to the fact that sometimes light bulbs, if there are several, in these same spotlights shine differently. Some lamps shine quite brightly, while others burn, at best, at half light. In this article we will try to deal with the essence of the problem.

So, for starters, a little theory. Halogen bulbs installed in recessed downlights are designed for operating voltage of 220 V and 12 V. In order to connect bulbs designed for voltage of 12 V, a special transformer device is required ...

The range of recessed spotlights today can satisfy, perhaps, any, even the most demanding customer. Not the last role when choosing fixtures is played by bulbs installed in fixtures.

Just a couple of years ago, there were only two types of bulbs — halogen and incandescent — for recessed spotlights. We will not dwell on the description of the variety of halogen lamps. The purpose of the article is slightly different - to show the advantages and disadvantages of various types of lamps.

The principle of operation in both lamps is approximately the same. The only difference is the gas that the bulbs of bulbs are filled with ...