Comparison of a conventional ceiling LVO lamp with an LED analogue.

The revolutionary Age of lighting is approaching. The best universal technology for lighting equipment, selected at the state level, is energy-saving LED technology. And technological innovations appear, there are a huge number of them, they replace like ordinary incandescent lamps, spotlights, architectural and interior lighting. There are solutions for offices, and in general, for their upcoming construction, using cost-effective lighting devices.

Namely, where I drove everything, in the last sentence, these are LED lamps built into the ceiling. Let's see if there is a benefit in its use and how economical is this device?

An article on how to choose a professional electrician.

If you fall into pessimism, and from its "heights" look at your apartment, the picture, I tell you, seems joyless. It turns out that our apartment is an endless source of disasters.

Let's start with the smallest - you can fall out of the window (if you look through the eyes of a pessimist, it will be obvious), from the balcony you can fall. The bathroom is just a crowd of disasters. The toilet is clogged, the taps are leaking, the risers are breaking, as a result, the neighbors are drowning. But the worst danger is the wiring ...

This is a collection article that describes and uses the most common chemical power sources at present.

In the modern world, portable power supplies are indispensable. They are used in all digital, consumer electronics and not only.

The quality and duration of a particular appliance depends on the correct choice of the battery. Below are the types of current sources and a description of their advantages and disadvantages.

The life of this battery is about 90-3700 discharge-charge cycles. Electromotive force (EMF) - 1.3 Volts. Self-discharge is about ten percent per month. Application temperature: -10 to 40 ⁰FROM ...

Many people, nowadays, very often have a question about why multicore and single-core wires are needed and for what purpose this or that type is used? I will try to give a clear, clear answer to this question. To do this, we will simply consider the following items separately: the structure (structure) of the multicore and single-core wires, the scope and main advantages of each type of conductor.

A single-core wire is a wire in which the cross section is formed by one conductor (current lead, residential). A stranded wire is a wire whose cross section is formed by several, sometimes intertwined, veins. Also, to give the wire more flexibility and elasticity, a thread can be woven with veins (it resembles kapron thread in strength and composition) ...

When designing or repairing appliances, household equipment, the problem often arises: how to weld certain parts. Buying a welding machine is not easy, but making it yourself ...

In this article you can get acquainted with a simple home-made welding machine, made according to the original scheme.

The welding machine operates on a 220 V network and has high electrical characteristics. Thanks to the use of the new form of the magnetic circuit, the weight of the device is only 9 kg with overall dimensions 125 x 150 mm.This is achieved by using a tape transformer iron rolled into a torus shape, instead of the traditional package of W-shaped plates. The electrical characteristics of the transformer on the magnetic pipe are approximately 5 times higher than that of the W-shaped, and the electrical losses are minimal ...

Garden lighting design is divided into two areas. The first includes technical issues that an electrical engineer deals with, and in the second case, the architect determines how organically the technical elements fit into the overall composition of the garden.

When illuminating an open space, the main thing is decorative design and ensuring normal orientation in space. In addition, outdoor lighting is often used to protect and provide traffic.

Types of lighting are divided into technical, decorative, flood and accompanying. All types are compatible with each other.

There is an easy way to create coverage of the territory is the uniform arrangement of the same type of fixtures. This method is great for lighting alleys, paths, and areas of your garden. Most often, floor lamps are used, the design of which has three fundamental stylizations: high-tech, functional and antique. The effectiveness of their work with competent lighting design does not depend on stylization.

No one can name the exact date of the scientific discovery of the fact that electric charges can be accumulated using special devices, later called Leiden banks and later developed in devices called electric capacitors. But it can be argued that after 1745. with the help of the Leyden jar, it was possible to find out the high speed of the spread of electricity, its effect on the human and animal body, the possibility of igniting combustible gases with electric sparks, etc. Thousands of researchers are trying to use this device for the needs of the national economy. However, for some reason no one is trying to study the Leiden bank itself.

The first question to nature on the bank itself is asked by the great American self-taught scientist Benjamin Franklin. Recall that the Leyden jar at that time was an ordinary corked bottle of water, into the cork of which an iron rod was inserted that touched this water. The bottle itself was either held in hands or placed on a lead sheet. That was her whole device.

Franklin wondered where in this simple apparatus made of glass of metal and water electricity could accumulate. In an iron rod, water or the bottle itself? ...

For low-voltage devices, power 6, 9, 12 or 27 V is often supplied from a laboratory autotransformer (LATR). And since the current consumption in this case is several amperes, wear (erosion) of the winding turns occurs at the contact point of the current collector, the LATR begins to “jam”.

The performance of the LATR is fully restored if the low-voltage voltage is removed from other turns of the autotransformer. It is enough to connect the load between the current collector and the second terminal "220 V", making an additional output "Load 2" from it. Now, when the current collector moves from it to the lower position, the voltage will change from 0 to 30 V, when the slide moves in the opposite direction, the voltage is regulated in the range 0 - 220 V. Moreover, the low-voltage voltage is removed from the undamaged sections of the transformer winding ...