It is no secret that any wiring series without switches is defective. And although the switches are far from being the most popular mechanisms, comfortable wiring without their use would be more complicated and less interesting.

The main application, which is offered "from the manufacturer" (such schemes are present in many catalogs) is lighting control from several places. Yes, indeed - turning the bulb on and off from different points is very convenient, but the control process is not always straightforward with switches.

And the thing is this: lighting control in the apartment is a comfort function. Management should be clear and inconspicuous. Do not distract attention for simple actions ...

The article describes the main disadvantages of implementing the "smart home" system in the construction or repair of a house. After reading this article, you will not want to make a smart home system!

Nowadays, automation systems "smart home" are becoming quite popular. Advertising screams about the convenience, economy, comfort and many other advantages of such systems. An uninitiated layman sometimes does not imagine what problems he may encounter when buying such a system for his home. Consider some of the shortcomings of "smart home" in more detail.

The first, and main, drawback of a smart home is the high cost of equipment, its installation and maintenance. This aspect repeatedly covers the cost of the entire effect of energy savings ...

Externally, the electronic transformer is a small metal, usually aluminum case, the halves of which are fastened with just two rivets. However, some companies produce similar devices in plastic cases.

To see what is inside, these rivets can simply be drilled. The same operation will have to be done if an alteration or repair of the device itself is planned. Although at its low price it is much easier to go and buy something else than to repair the old.

The circuit diagram for the device is not attached, as well as for all current electronic devices. But the scheme is quite simplecontains a small number of parts and therefore the circuit diagram of an electronic transformer can be copied from a printed circuit board ...

In order to improve the electrical safety conditions when operating lighting systems, in some cases it is recommended to use lamps not for 220V voltage, but much lower. As a rule, such lighting is arranged in humid rooms: basements, cellars, bathrooms.

For these purposes, mainly halogen lamps with an operating voltage of 12V are currently used. The power of such lamps is provided through electronic transformers, the internal structure of which will be discussed a little later. In the meantime, a few words about the regular use of these devices.

Externally, the electronic transformer is a small metal or plastic box, from which 4 wires come out: two input with the inscription ~ 220V, and two output ~ 12V ...

Electroconvectors Bravo, Roda SORGE, advantages and disadvantages of convectors, fan heaters, carbon and halogen household heaters.

Despite the fact that the principle of convectors is the same, many models have their own distinctive features. Consider these features on the example of several models of the company RODA. The control of these convectors is electronic, there is an LCD display.These convectors have the following distinctive features that expand the functionality.

In addition to the BRAVO series, RODA also produces convectors in several more series. The simplest is the Roda STANDARD series. These convectors have an electromechanical thermostat, the power depending on the model is 0.5 - 2.0 kW, designed for mounting on a wall ...

Dimmers (dimmers for controlling light) is a miniature device that is installed instead of the usual, standard mechanical switch, which allows you to smoothly adjust the brightness of artificial lighting.

The first, a mechanical dimmer, was invented in the 1890s to slowly darken theater lighting. The primacy of this invention belongs to the inventor - self-taught, an ardent fan of Melpomene from the United States, Granville Woods.

All dimmers are designed to turn on / off the lighting and adjust its intensity. In addition, many models provide other useful features. For example automatic shutdown by timer, imitation of presence, smooth shutdown, remote control ...

Heaters of various types are widely used in apartments and offices, as a rule, as additional heating. The greatest demand for them in the fall, when they do not rush to turn on central heating, and in apartments, especially at night, it becomes very cold. Next, it will be described how to choose a heater, what types of heaters exist, and their application features.

Industrial heaters are designed for round-the-clock operation for a long time. However, they do not require care and prevention, and generally no maintenance, except, except for wiping from dust with a soft rag. By their design, scope, maintainability, complexity, principle of operation, the number of additional functions, heating devices are very diverse and numerous ...

The cordless screwdriver is lightweight, small in size, does not require a network connection, which allows you to work with it in any conditions. But the trouble is that the battery capacity is small, and after 30 to 40 minutes of intensive work, you have to put the battery on charge for at least 3 to 4 hours.

In addition, batteries tend to become unusable, especially when they do not use a screwdriver regularly: they hang a carpet, curtains, paintings and put it in a box. A year later, they decided to screw on a plastic baseboard, and the screwdriver does not “pull”, charging the battery helps a little.

A new battery is expensive, and not always on sale you can immediately find exactly what you need. In either case, there is only one way out - to power the screwdriver from the mains through the power supply ...

This article has a somewhat provocative title. I am sure that there will immediately be people who will instructively write, saying that twisting is illegal and according to the PUE, twisting of wires is prohibited.

Nobody argues with this. If it were not for the fact that, despite everything that is written in the EMP, the vast majority of wire connections in the territory of the former large Soviet country are still twisted.

I will not argue that a very good twist of wires is the most reliable and high-quality way to connect wires, although they constantly try to prove it to me. We will simply proceed from the fact that good twisting can be called one of the stages and a very important element of such methods of connecting wires, such as soldering or welding ...

For any layman in our country, the concept of energy conservation is an energy-saving light bulb and, at best (if you have a technical background), smart home electrical appliances. Basically, most people, with energy conservation issues, are faced precisely in these areas of their life (if the housing and communal services system does not work).

For the average person who does not need to delve into problems of a national scale, participation in the government’s energy conservation program means replacing the old Illich lamp with an energy-saving lamp. But energy-saving lamps, today are tens of times more expensive, but people still buy, because according to Law 261-f3 from 2012. incandescent lamps in our country will not be produced ...

The advantages of an induction lamp compared to LED.

Currently, the topic of LED lighting has become very popular. However, many of the advantages attributed to them are not justified in practice. For example, due to the degradation of crystals, illumination sharply decreases already during one year of operation and there can be no talk of the specified operating time of 60,000 hours.

The question of the payback of LED lamps is very controversial. Meanwhile, there are light sources that currently have better technical characteristics than LEDs and are about three times cheaper than them. These are commercially available induction lamps. Induction lamps are a modernized fluorescent lamp. Its main difference from other lamps ...

Today, there is a huge number of a wide variety of household appliances, which are equipped with more and more intelligent electronics every year, are reduced in size, change their design, shape and color.

But nevertheless, despite this, one thing has remained unchanged for many years: today, as before, the stable operation of electrical equipment is completely dependent on the quality of electricity.

How many troubles did sharp dips and peak surges in mains voltage do in everyday life and in production? Workshop workers and firefighters know best about this. Is it possible to minimize the number of failures of household appliances and equipment due to unstable voltage? It turns out you can ...