To adjust the brightness of the glow of the lamps, special electronic devices are used - dimmers. And if earlier this concerned only incandescent lamps, then with the advent of LED lamps on the market, there was a need to regulate them. In general, the dimmer function is to lower the average current through the lamp to the desired level, and thus reduce the intensity of the light emitted by it.

So, with incandescent lamps, triac and thyristor dimmers are traditionally used, which adjust the power supply to the lamp by cutting off part of the phase of the mains voltage. Since incandescent lamps are quite ingenious devices, then dimmers for them are quite simple in design. With LED lamps, the situation is more complicated.

Ordinary LED lamps sometimes contain in their design, in addition to LEDs, also a simple pulse converter circuit, which is designed to interact with an ordinary ...

When it comes to home automation, at first glance it may seem like something very, very complicated, it immediately suggests a bunch of different sensors that need to be connected and configured somehow. However, in reality this is not always the case. In particular, the Fibaro Starter Kit is easy to install and configure, therefore, to create a “smart home” system with it, the user does not need special knowledge and special skills.

The Fibaro system is a Z-Wave wireless intelligent building automation system. And the Fibaro Starter Kit consists of only a few parts, it includes a controller and several wireless sensors that will make it easy to create a “smart home” for a housewife who is not even sophisticated in these matters, without any damage even to the most sophisticated interior .. .

For a long time, lighting systems with cotton on were no wonder, for those days had passed when such a technical miracle could be observed only in Hollywood films. Moreover, other scenarios of the operation of smart lighting are possible, for example, turning on the light when the motion sensor is triggered or depending on the degree of natural light. The various scenarios of smart lighting will be discussed in this article.

If you turn on the light, where necessary, you can, as necessary, then turn it off, you can sometimes easily forget. For example, a man came to the kitchen, made tea, and suddenly remembered a case that he urgently needed to do in another room. He goes there, continues his activities, at the same time distracted by something else, and in the kitchen the light remained on. Suddenly you need to go somewhere, he urgently puts on his shoes ...

A device that measures the level of humidity is called a hygrometer or just 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 well-being depends a lot on the degree of air 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 ...

Gate means a mechanical structure mounted in a wall to restrict and regulate access to a controlled area. According to the device, they can be conditionally divided into: a mechanical enclosure attached to the building elements of a building or fence as part of a stationary and movable structure, a drive that performs the operation of opening or closing the gate leaves with a fixation of the executed position, automation that controls the operation of the main parts of the drive system.

According to their technical performance, modern designs used for installation in a cottage, cottage, garage are mounted according to one of the following principles: hinged, usually made by two leaves, sliding, made by a single solid door moving along the lower metal tee or other supporting profile and supported by top rail ...

The term "spotlight" explains the explanatory dictionary of the Russian language as a lighting device, consisting of a system of mirrors or optical lenses, designed to create a strong stream of directional light focused in a limited angle.

It has a great blinding effect and, when installed on vehicles, it must be switched off when the oncoming stream is much earlier than the main beam headlights. Such structures are practically not used to illuminate the entrance to buildings.

Over the past two decades, streetlights have come to be called ordinary street lamps, illuminating the territory at a wide angle and having a power of 50, 20 and even 10 watts. They are equipped with economical LED sources, motion and light sensors. In most cases, they are already factory-installed and prepared for joint work. It is enough for the end user to connect power wires to them ... 

Qualified electricians have such a rule - not to consider themselves smarter than others in their profession. It means: rechecking someone’s work after commissioning some device and seeing a mismatch in the circuit, you should not immediately conclude that a gross mistake has been made here.

It is likely that you yourself did not fully understand the setup of this appliance, the tricks of its configuration and operation. Think about the question that has arisen, look at the documentation on it again, analyze the settings, the effect on other devices. In extreme cases, consult with colleagues.

It is likely that this is not a mistake of the previous specialist, but your ignorance of the features of this circuit and the adjustments made to its algorithm by other electricians. This rule often helps to get rid of unpleasant situations and makes you improve your knowledge ...

When purchasing a motion sensor to turn on the light, do not take the first one you get. To begin with, it is necessary to determine some significant parameters, the conditions for its future use, and, depending on them, choose a sensor with suitable technical characteristics.

There are four main parameters, taking into account which you will not lose and will not be disappointed; Here are these parameters: environmental conditions, the power of the switched equipment, especially the response zone (the necessary viewing angle and radius of the sensor), the requirements for the response time of the sensor and the adjustment of the light level.

For different environmental conditions, sensors with various degrees (classes) of protection are provided.The protection class shows how resistant the sensor is to dust, other physical influences ...