In any civilized house, office, or industrial premises there is a standard wiring. Traditionally, wires still under construction are laid in a furrow in the wall or in the ceiling, which is then sealed. But there is another way to hide the wires, doing everything without noise and dust.

Let's say you started a repair or decided to lay a communication or electric wire from one room to another over a wall or ceiling, so that no one would stumble over it, and in general so that the wire would not catch your eye. Here, modern cable channels will help you. Cable channels will allow aesthetically concealing, and at the same time, it is quite reliable to protect your wires from dirt and moisture. If necessary, the wires can be easily removed, supplemented with another wire or completely replaced the wiring. By the way, installation of cable channels is quite simple. However, first things first. As a rule, any building ...

Large green lawns, conservatories, outdoor tennis courts and golf courts, soccer fields, hotbeds, greenhouses and greenhouses, beds with seedlings, flower beds - cable heating systems for soil can be useful everywhere. These systems allow you to use the soil as efficiently as possible to achieve several important goals, the main of which is to provide plants with the most favorable conditions for growth regardless of the climate variability of your region.

Comfortable temperature in the basal and in the aboveground zone of plants creates an atmosphere of maximum effective natural development, even during periods of cold weather. As a result, productivity, fruitfulness, for example of greenhouses, increases: the soil composition changes due to the successful course of biological processes in it, as a result - plant vegetation accelerates - productivity increases. In such favorable conditions, you can ...

An impact drill is capable of performing conventional drilling only with impact. The gearbox of such devices can have either one or two speeds. As additional functions, there is a reverse stroke and the ability to configure the desired idle speed.

An impact drill has two helical gears that contact during normal operation of the drill. When it is necessary to drill with impact, one gear moves, thus forming a gap with the gear in front. Further, the rear gear remains stationary, and the one in front begins to slide along the teeth and move the cartridge up and down. This is how the impact of many impact drills is created. Moreover, the number of such strokes can be 40,000 in one minute. It should be noted that the shock function of the drill should be used only in the most emergency cases. If the drill is constantly used with a shock function, then very soon the hammer mechanism may fail ...

The kitchen is one of the most difficult rooms in terms of repair. It is full of various household appliances, for which it is advisable to foresee at the planning stage not only their place of permanent placement, but also how they will be connected to the mains and how convenient it will be to use them. Sometimes mistakes in planning can significantly spoil the impression of the work done, and redoing or not having time, and often just expensive.

Now residents and new settlers massively install kitchens that are beautiful, modern, but you look at the end result and you see that the electrics are made at the level of Soviets, the cords weigh (from lamps, hoods, microwaves, etc.), there is one socket, a maximum of two and in such a place that it is not clear why she, because again, you need an extension cord to make everything work properly. Guys, I understand everything, the head at such moments is always full of a sea of ​​information...

At the very beginning of the topic, regarding the selection of a quenching capacitor, we consider a circuit consisting of a resistor and a capacitor connected in series to a network. Let us consider from a practical point of view the question of selecting a quenching capacitor for inclusion in the AC network of a load designed for a voltage lower than the standard mains voltage.

Suppose we have a 100 W incandescent lamp designed for a voltage of 36 volts, and for some incredible reason we need to power it from a 220 volt household network. Having such a capacitor, we gain hope to get a normal glow of the lamp, we hope that at least it will not burn out. This approach, when we proceed from the effective current value, is acceptable for active loads, such as a lamp or heater. But what if the load is non-linear and connected through a diode bridge? Let's say you need to charge lead acid ...

Electric networks are an object of increased danger and their condition must be constantly carefully monitored. Often, a fire is caused by worn or inappropriate power consumption. To avoid this, it is necessary to regularly diagnose its condition and, if necessary, perform its full or partial replacement.

Wiring in an apartment and a house - which is better? The cable with which material lived better - aluminum or copper? When installing electrical wiring in the apartment, conductors (wires and cables) made of aluminum and copper are suitable. Is it really important what they are made of? Is it worth changing the aluminum wiring to copper? Maybe you can leave it as it is and not touch anything? In this article, we consider the following issues: the service life of aluminum and copper electrical wiring, for which it is necessary to change the aluminum wiring to copper and in what cases ...

The light distribution curves of luminaires are one of their most important parameters, along with the ratio of light fluxes distributed in the lower and upper hemispheres. A lamp as a lighting device is not manufactured for one object, therefore, even at the design stage, a lamp is developed as a standard one, which can be used massively in many places.

Here, one of the key points is the distribution of the light flux in space, which determines where this lamp can be used and where it is not possible, in accordance with GOST 17677-82 “Lamps, general technical conditions”. The first thing to understand is that the light distribution curve can be symmetric or asymmetric, and there are seven main types of symmetrical (most common) light fluxes, which depends on the shape of the distribution curve ...

The range of lamps today is quite wide, and it is not at all surprising that someone may have difficulty choosing lamps. Someone still uses incandescent lamps, while someone has already switched to more economical compact fluorescent and LED lamps. Meanwhile, Federal Law No. 261 “On Energy Saving” significantly limits the possibility of using incandescent lamps in the future.

In order to help the consumer make the right choice, we compare the power of various types of lamps. Let us consider how the power of an incandescent lamp, a compact fluorescent lamp, and an LED lamp correlate with approximately equal requirements for the luminous flux emitted by them. We will compare the following three lamps: a 75 W incandescent lamp, a 15 W compact fluorescent lamp, a 9 W LED lamp ...