What does a modern person do to order the services of an electrician, achieve the desired quality and spend a reasonable amount? Usually looking for a master among friends or through ads on the Internet. Recently appeared online Sevris with a large database of masters, including electricians, greatly simplifying the search for specialists to provide services. Moreover, you can find artists of any level: both to replace the outlet, and to install wiring with the assembly of the shield.

This service is called Metnys Kabanchik and is a large Internet platform. Simply put, the site assumes the role of an intermediary - it enables any customers to find direct executors registered on this project. Accordingly, each master with a certain level of skills can earn extra money by completing one-time private orders. Unlike bulletin boards, a specialized resource allows for the conscious selection of a wizard ...

It would be very convenient to control various equipment through a mobile phone. I just sent an SMS message, and one or another device turned on or off: the gate opened, heating started, the air conditioner started working, but you never know how much can be automated in this way at home or at work. And even better - a notification about the inclusion or about a change in the status of the device via SMS.

All this is already possible, and regardless of distance, regardless of operator, regardless of the user's location (the only condition is the presence of a cellular network). And this is not about complex automation systems, it is about compact modular devices - a remote control relay via a GSM channel. The Polish electrical company F&F already mass-produces relays with the ability to remotely control two models. These devices are designed for remote control. ...

Among the many chips presented on the modern market of microelectronic components, there are real legends that have rightfully earned their high reputation. In this article, we will focus on four such legendary analog microcircuits, namely: NE555, A741, TL431, and LM311.

The NE555 Analog Integrated Circuit is a universal timer. It successfully serves in many modern electronic circuits to produce repetitive or single pulses with constant time characteristics. The microcircuit is essentially an asynchronous RS-trigger with specific input thresholds that are precisely set by internal analog comparators and an accurate voltage divider. The integrated structure of the microcircuit includes 23 transistors, 16 resistors and 2 diodes. NE555 is still available in various packages ...

When it comes to choosing a multimeter, the user is faced with a problem. Which multimeter is suitable for its various purposes? After all, the assortment of measuring instruments of this type is quite wide today, multimeters with more or fewer functions are on the market, some are more expensive and some are cheaper, but the choice should be made not to buy the first one that catches your eye.

For household purposes, the device is simpler, and for repair and laboratory work related to the diagnosis of electronic devices and maintenance of industrial equipment, you will need a professional multimeter.Let's compare the difference between a household multimeter and a professional one, and what tasks this or that class of this device will solve. As a household multimeter is very popular ...

Owners of cottages and summer cottages on their territory are building garages, baths, small workshops, cellars and other utility rooms, which are supplied with electricity for lighting, heating and other uses. The article gives recommendations on how to reliably and safely perform such work, avoiding the typical mistakes made by home masters.

Before undertaking electrical work, they must be carefully thought out and a plan drawn up on paper. This will save time on the implementation of ideas, materials and money. Official sources recommend using a radial wiring diagram in new rooms to the main distribution panel of the building when cable lines radiate to all consumers from it. This option allows you to have everything in one place. circuit breakers...

A device that measures the level of humidity is called a hygrometer or simply a humidity sensor. In everyday life, humidity is an important parameter, and often not only for ordinary life, but also for various equipment, and for agriculture (soil moisture), and much more.

In particular, our state of health depends a lot on the degree of humidity. Particularly sensitive to humidity are weather-dependent people, as well as people suffering from hypertension, bronchial asthma, diseases of the cardiovascular system. With high air dryness, even healthy people feel discomfort, drowsiness, itching and irritation of the skin. Often dry air can provoke diseases of the respiratory system, starting with acute respiratory infections and acute respiratory viral infections, and ending even with pneumonia. At enterprises, air humidity can affect the safety of products and equipment ...

When using modern materials for coating ceilings, original lighting effects and unusual appearance of rooms are created. But, at the same time, the volume of the premises is slightly reduced due to the indentation of the decorative coating from the base building surface with power supporting elements, on which chandeliers and other lamps were previously fixed.

Suspension, and especially tension structures, by themselves do not have high strength, they are not able to withstand the created static load from the weight of ordinary and heavy chandeliers. They are made to work without third-party efforts. Therefore, to fix the fixtures, one of two methods is used: mount an elongated mounting hook on the base ceiling, onto which it will be possible to hang the chandelier after installing the stretch fabric, make mounting adapters with a thickness equal to the gap between the building base surface ...

In many electrical appliances, the principle of implementing secondary power has long been applied through the use of additional devices, which are entrusted with the function of providing electricity to circuits that need power from certain types of voltage, frequency, current ...

For this, power supplies are created that convert the voltage of one type to another. They can be built into the consumer’s case, like on many microprocessor devices, or they can be made as separate modules with connecting wires on the model of a conventional charger on a mobile phone.In modern electrical engineering, two principles of energy conversion for electric consumers are successfully coexisting, based on the use of analog transformer devices for transmitting power to the secondary circuit and switching power supplies ...