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 off dust with a soft cloth. By their design, scope, maintainability, complexity, principle of operation, the number of additional functions, heating devices are very diverse and numerous ...

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 ...

The article describes the various types of metal detectors (hand, arch, soil) and the principles of their work. Their advantages and disadvantages are considered.

Very often during repair and construction work it is necessary to determine the exact location of the fittings, wiring in the walls and floor. After all, it is almost impossible to drill fittings in the wall, and damage to the electrical wiring threatens, at best, with a serious accident, or even an electric shock.

When excavating, there is the same problem - to find out the exact location of the various underground utilities. The same cables or pipelines. Here you can’t do without special equipment. Hand-held metal detectors will help you cope with the first task ...

The article lists the main advantages of electronic ballasts over obsolete counterparts.

Ceiling and wall lamps with fluorescent tube lamps have long been in service in various office, office and residential buildings. In appearance, by the number of installed lamps and their power, these lamps are characterized by a wide variety. This explains their widespread popularity. But until relatively recently, people had to put up with some of their shortcomings.

The fact is that a fluorescent lamp cannot be directly connected to the network, for operation it needs certain conditions for supplying voltage and current control. This problem is solved by ballasts for fluorescent lamps ...

The use of fiberoptics, or more simply, fiber optics, to illuminate personal plots, is becoming increasingly popular today. Despite the high cost of this type of lighting fixtures, more and more people opt for them. And there are objective reasons for this.

Firstly, an optical fiber is absolutely fireproof, since it is not a light source, but a light-conducting medium.Secondly, the capabilities of light filters, which easily allow you to change the color of light, create a simply amazing effect. Thirdly, the fiber optic cable is completely sealed, which gives truly unlimited possibilities when choosing its location. Fourth, this type of cable is flexible and very heat resistant ...

Film floor heaters have obvious advantages over cable heaters:

1. Installation of a film heat-insulated floor is carried out in just a few hours.

2. There is no need to open the floor.

3. There is no need to make a screed.

4. The film heater can be installed under any coating: laminate, parquet, linoleum.

We examine the system of film insulation material for the floor. Its central thickness is approximately half a millimeter. A similar heater is made from glued dacron films. Between these films are conductors (silver or copper), and a heating graphite element ...

The modern elemental base of electronics allows you to create devices simple in circuitry, but having a fairly wide range of functions. Previously, such devices were only available for use in complex and expensive professional systems, and now their use makes our everyday life more comfortable and easier.

This article will talk about devices that use sensors that respond to infrared radiation. Once such sensors were mainly used in security systems, now no one is surprised by the doors that open in front of each incoming person or the automatic inclusion of lighting in the entrance. And all these are infrared sensors! ...

Starting January 1, 2011, the household appliances we purchase must have a class designation of energy efficiency. That is, in the passport of the device or on the case, there must be a label of a certain color, with a letter indicating the class of energy efficiency.

The letter A, on a bright green background, marks the equipment with the highest energy efficiency indicator. Marking B, means lower energy efficiency and is shown on a light green background.

The letters C, D, F, G follow and the color scheme changes from green to yellow (D) to bright red (G), showing the lowest energy efficiency. Additional classes also exist. A +, A ++, these are devices whose energy efficiency is higher than that of class A...