In energy, electronics and other branches of applied electrical engineering, a large role is given to transformations of electromagnetic energy from one type to another. Numerous transformer devices, which are created for various production tasks, deal with this issue.

Some of them, having the most complex design, perform the transformation of powerful high-voltage energy flows, for example. 500 or 750 kilovolts in 330 and 110 kV or in the opposite direction. Others work as a part of small-sized devices of household appliances, electronic devices, automation systems. They are also widely used in various power supplies of mobile devices. Transformers work only in alternating voltage circuits of different frequencies and are not intended for use in DC circuits that use other types of converters ...

Now you can quite simply purchase equipment for the protection of an apartment or house in a store or order it via the Internet. It will differ in the number of constituent elements, their capabilities, but have common features.Thanks to the built-in power supply module and all the elements inherent in mobile communication devices with a SIM card, including a microphone and speaker, such a remote control can operate in a mobile phone mode. Through it, you can conduct conversations and send SMS messages, which is used to immediately transmit information to the apartment owner about the operation of a specific sensor.

The presence of factory mounting methods in the form of special sockets for screws allows you to install a security unit at the exit of the apartment near the door, which is quite convenient for constant use Individual owners place it in a conspicuous place, using it to decorate a room or as a wall clock. However, it is worth considering...

Issues of home security and property conservation concern every apartment owner. People solve them in various ways, including the installation of a security alarm, which allows to effectively identify the occurrence of an unusual situation in their area of ​​residence, and take effective measures to prevent theft. The term security alarm refers to a set of technical means operating in automatic mode, which is designed to detect cases of unauthorized access of people to the protected zone and take effective measures to suppress them.

Typically, the controlled space is divided into several composite zones, including: the external boundaries of the observation of the approach to the house, the interior of the apartment, the condition of the fencing of building structures with the ability to penetrate through: walls, windows and doors, roof, basement. The simplified structure of such a system can be imagined ...

Electronic locks are increasingly becoming part of the life of a modern person. The number of varieties of electronic locks is very large, and mechanical ones are gradually replaced by them. Recently, biometric locks have appeared on the horizon, about which something is already known, and they will be discussed in this article.

What is biometrics in general? It all starts with the fact that for authenticating a person, the owner of an apartment, house or safe, you can use individual information, the source of which is DNA: a picture of a fingerprint or iris, an image of the retina or veins on the front of the eye - these are individual keys, which can be used as such for opening and closing a biometric lock, because there are no people with the same DNA in the world. The electronics of the biometric lock will analyze the fingerprint pattern, compare it with its base ...

Conventional electric heaters have long been known to everyone, but a completely different thing is an electric fireplace with a flame effect.The flame is cold, it is created thanks to a couple in combination with modern visualization technologies. The result is the effect of a real fire with smoke that comes from the “burning” firewood in the firebox.

Yesterday, the best models simulated fire, showing it on the screen, but will such an imitation create a real effect of the presence of fire in the fireplace? Will not create. If you look at the screen from the side, the artificiality of the fire will become apparent, and the whole idyll will be violated. The situation is different with fireplaces, where the illusion of flame is created precisely by a steam generator with the correct illumination with halogen or LED lamps. Such a fireplace will provide realistic and voluminous flames with diffusing smoke. It is about such fireplaces, about their device, that will be discussed in this article. Of course, the function of a fireplace with a flame effect is decorative ...

Mobile technology has tightly entered our daily lives, and the advent of wireless chargers is quite natural. After all, electronic consumer devices (such as smartphones, for example) should ideally work for a long time and without failures, while it is not very convenient to plug the plug into an outlet every time, and the plug into the gadget when you need to recharge it. A set of wireless interfaces (Wi-Fi, Bluetooth, etc.) has long become a familiar attribute of many portable devices, so why not include an interface for wireless charging in this set? And modern technology has allowed this to be realized.

Of course, when charging wirelessly, the rechargeable mobile device should be at least 4 cm from the charger, but you must agree, this is more convenient than a wire extending from the plug. Sometimes during recharging there is a need to take a call, move away from the charger ...

New Year holidays come as always unexpectedly and bring with them a lot of pleasant trouble. It’s time to think about gifts, first of all for children, for adults to set the table, pick up good music and be sure to put a Christmas tree, which to dress up, so that the guests would have fun and cozy. And the first thing to hang on the tree is, of course, Christmas tree garlands. All other toys, as a rule, are hung after garlands. Next, we will talk about the device of a variety of different Christmas garlands - old and modern.

In ancient times, when there was no electricity, and the New Year was already celebrated, special New Year candles were lit on the Christmas tree. This decoration was very fire hazard. But these times have already passed, everyone began to use electric garlands. These were ordinary small bulbs from a flashlight or from the backlight of a scale in a radio receiver, connected in series. From such bulbs, garlands were made by enthusiasts ...

The life of a modern person is connected with the operation of a large number of various equipment, the work of which is often monitored remotely using various types of signaling. Among them, information on the onset of a fire at critical industrial facilities and inside multi-storey buildings with a large number of people is given crucial importance.

Its main task is to ensure that, at the first signs of a fire, information is quickly transferred to the duty service, which is able to quickly arrive at the scene and take emergency measures to extinguish the fire, and prevent its spread. Additional tasks of fire alarm systemsmay beremote activation of pre-arranged fire extinguishing means - various types of fire extinguishers, unlocking ...