Lighting the workplace is an important condition for the productive implementation of tasks. The proper level of illumination is created by local light sources, which include table lamps. The comfort of its use depends on the choice of this light source. On the modern market there is a wide range of both decorative and functional lamps from simple to complex devices with a wide range of additional functions.

Table lamps can be divided into two types: decorative and for working lighting. Decorative table lamps are used to create a subdued uniform light in the room. For this, translucent diffuser shades or lampshades of glass, plastic or fabric are used. Such lamps complement design decisions in the interior and for the most part are not suitable for lighting a workplace. Table lamps create a directional beam...

Growing vegetables in a greenhouse requires special attention to all the nuances and conditions. A significant role is played by the temperature of the soil and the environment. Frost is especially dangerous for plants, and if the temperature of the soil drops below the recommended norm, then the seedlings can disappear altogether. Therefore, you need to equip the soil heating system. One of the possible options is heating the greenhouses and soil with a heating cable.

Heating the soil with a cable will help to achieve a larger crop than without it.The optimum temperature is considered to be at the level of 15-25 degrees Celsius. To achieve this temperature, it is necessary to spend 75-100 W / m. In this case, the specified parameters should not be exceeded, since overheating of the root system as well as hypothermia is dangerous. To save the cable, it should be laid only in those places where plants will grow. Warming up the soil under paths and passages is simply meaningless ...

For electricity, you need to pay, as well as for any other resources and services. In order not to let yourself be deceived when paying, you need to learn how to calculate its expense. There are special devices for this, for example, an individual meter, which is installed in each house or apartment. However, it shows the total consumption, and how to calculate the electricity consumption by a separate device we will describe in this article.

The main characteristics of electrical appliances are voltage, current and power. At the same time, either all three parameters can be indicated on the case or in the instrument passport, or in a selective manner. In Russia and neighboring countries, electrical appliances are used that are designed for a voltage of 220 V AC, in America, for comparison, there may be a voltage of 110 or 120 V. In the passport of the device, depending on the particular case, in explicit form, the power may not be indicated at all, but the electricity consumption ...

A large modern city is always noise. And noise is one of the stress factors for any living thing. It is customary to defend oneself from city noise: we equip the walls of buildings with high-quality sound insulation, we make the windows of houses soundproof if possible. Needless to say, poor fellows living near airports and noisy freeways, for which the pecking of pedestrians' feet is like the rustling of autumn foliage, compared to their usual everyday acoustic background.

Meanwhile, screeching sirens, buzzing wheels, stomping pedestrians, noisy cranes at construction sites, carriages rattling wheels on rails - all this is not just enormous unbearable noise, it is, first of all, mechanical vibrations propagating through the air, which means it is wasted (and even to the detriment) kinetic energy, attributable simply to the so-called "noise pollution". But is it possible to wrap these fluctuations not to the detriment, but to the benefit? ...

Fluorescent lamps cannot work directly from a 220V network. To ignite them, you need to create a high voltage pulse, and before that heat their spirals.To do this, use ballasts. They are of two types - electromagnetic and electronic. In this article we will consider electronic ballasts for fluorescent lamps, what is who and how they work.

Fluorescent lamp is this gas-discharge light source. It consists of a tube-shaped flask filled with mercury vapor. At the edges of the flask are spirals. Accordingly, on each edge of the flask is a pair of contacts - these are the conclusions of the spiral. The operation of such a lamp is based on the luminescence of gases when an electric current flows through it. But the current just between the two metal spirals (electrodes) just does not flow. For this, a discharge must occur between them, such a discharge is called smoldering ...

Smart home is a system that makes the equipment work for you and simplifies life. In order to make your home smart, you either need to radically redo the entire wiring and introduce microprocessor or even microcomputer control systems ... Or go softer, different way, gradually equipping it with smart things. The simplest thing you can do is automate the lighting. This article will discuss how smart lamps help in this and what it is.

What is a smart lamp? The concept of "smart" or "smart" in our time is glued to almost all technology. Progress has come to seemingly such a simple and mundane thing as a light bulb. What is called a smart lamp? There are two possible answers: A lamp or a full-fledged lamp with additional functions, such as automatic switching on by popping, human presence, in the dark and when other sensors are triggered. Lighting device with a set of sensors and a microcontroller system ...

LED strip is a multifunctional light source, thanks to its low voltage DC power supply and low power consumption. On the modern market, there are types of ribbons from low-power, for use for decorative purposes, to bright ones that are suitable as a light source. Also interesting are multi-color RGB models. In this article we will look at where you can use LED strips.

LED strips are powered with DC voltage of 12V. This means that you definitely need to buy a power supply for this voltage of the corresponding power, then we will give a table of consumption of different tapes. In fact, the luminous flux depends on the LEDs used.Next, determine how you will connect the power and connect the segments of the tape. If you are going to solder, then you need a 25-40W soldering iron, rosin or another flux, for example, LTI-120, and solder, for example POS-60 ...

Everyone knows the circuit breakers. In the people they are called simply "automatic". And everyone in the house or apartment has at least one, or even two such devices. Automatic machines protect wiring from emergency situations and prevent their development. Manufacturers print a whole series of text on their case, but not everyone understands what it says. This article will help you decipher the label of circuit breakers.

In terms of the appearance of the majority, it is impossible to determine what current it is rated for, the only thing you can guess from its size is it passes a large or small current and how many phases (poles) it is designed for. How to determine the characteristics of the machine? You just need to read the markings.Marking a series of machines allows you to find complete documentation with all the technical characteristics and features of the model. It is indicated either under the logo of the manufacturer ...

In production and in everyday life, automation is actively used.For this, actuators of various types are used, hydraulic, pneumatic and electric. Such devices include, disable, change the mode of operation of mechanisms, systems and devices. In this article we will look at some electromagnetic actuators.

To propel various mechanisms using electric motors and electromagnetic actuators. For example, electric motors are used for automatic or semi-automatic control of valves, the so-called shutoff valves on pipelines, like gas, pneumatic, water supply and other. The principle of operation of an electromagnetic actuator is to perform a magnetic field to move the core associated with actuators ...

Modern household electrical panels are significantly different from those that were in the last century. Particular changes were made in the assembly of the circuit and the breakdown of consumers into groups, as well as the introduction of protective devices such as RCDs or difavtomatov. The materials used have also changed. But first things first, in this article we will talk about the features of the assembly of modern electrical panels.

Typically, a counter was installed in the apartments, plugs with fuses or automatic plugs and everything, then there was wiring in the rooms. In the best case, a counter was installed with two pairs of traffic jams, then the load could be distributed among the rooms and the ability to disconnect each of them separately. Now in apartments there are more powerful consumers of the electric power and, at least, separate automatic switches. As a result, the approximate wiring diagram of a modern apartment will turn out this ...

The modern market is filled with a variety of LED lighting products. On sale there are both lamps under the familiar e27 threaded socket and lamps of other types. A separate class of products can be called LED lamps, in which it is impossible to replace the lamp, they do not have a cartridge, and the LEDs are simply soldered on the boards or strips. This begs the question: how to choose a good LED lamp?

Light requirements may be determined by the design decision, but this is not such a weighty argument as SNiP 23-05-95 and other normative documents. There are two main requirements for lighting the room: illumination and ripple factor. Both requirements depend on what the room is intended for, what and how long they will do something in it. This also implies the so-called class of visual work - it depends on the dimensions of the parts ...

In the workshop of an electronic engineer and electrician, if not necessary, then at least the presence of an oscilloscope is highly desirable. It is used along with simple measuring instruments: an ammeter, voltmeter, ohmmeter, and finally a multimeter. In this article, you will learn about the oscilloscope - what it is and why it is needed.

Everyone who works with electricity knows that voltage is measured with a voltmeter, and current with an ammeter. But these devices show only the current value that is at the time of measurement. Even when measuring variables by value and sign of values, you get some value averaged over certain algorithms or laws. But with the help of a voltmeter, you can monitor how the value is measured, however, with errors. For dial gauges, they are due to design features, and for digital ones as well, but the sampling frequency and other problems are also added ...