After all that has been said in the previous article, it seems that making a switching power supply from an electronic transformer is quite simple: put on the output a rectifier bridge, a smoothing capacitor, if necessary a voltage regulator and connect the load. However, this is not quite true.

The fact is that the converter does not start without load or the load is not sufficient: if you connect an LED to the rectifier output, of course, with a limiting resistor, you will be able to see only one flash of the LED when it is turned on.

To see another flash, you will need to turn off and on the converter to the network. In order for the flash to turn into a constant glow, an additional load must be connected to the rectifier ...

It is no secret that any wiring series without switches is defective. And although the switches are far from being the most popular mechanisms, comfortable wiring without their use would be more complicated and less interesting.

The main application, which is offered "from the manufacturer" (such schemes are present in many catalogs) is lighting control from several places. Yes, indeed - turning the bulb on and off from different points is very convenient, but the control process is not always straightforward with switches.

And the thing is this: lighting control in the apartment is a comfort function. Management should be clear and inconspicuous. Do not distract attention for simple actions ...

The article describes the main disadvantages of implementing the "smart home" system in the construction or repair of a house. After reading this article, you will not want to make a smart home system!

Nowadays, automation systems "smart home" are becoming quite popular. Advertising screams about the convenience, economy, comfort and many other advantages of such systems. An uninitiated layman sometimes does not imagine what problems he may encounter when buying such a system for his home. Consider some of the shortcomings of the "smart home" in more detail.

The first, and main, drawback of a smart home is the high cost of equipment, its installation and maintenance. This aspect repeatedly covers the cost of the entire effect of energy savings ...

Externally, the electronic transformer is a small metal, usually aluminum case, the halves of which are fastened with just two rivets. However, some companies produce similar devices in plastic cases.

To see what is inside, these rivets can simply be drilled. The same operation will have to be done if an alteration or repair of the device itself is planned. Although at its low price it is much easier to go and buy something else than to repair the old.

The circuit diagram for the device is not attached, as well as for all current electronic devices. But the scheme is quite simplecontains a small number of parts and therefore the circuit diagram of an electronic transformer can be copied from a printed circuit board ...

In order to improve the electrical safety conditions when operating lighting systems, in some cases it is recommended to use lamps not for 220V voltage, but much lower. As a rule, such lighting is arranged in humid rooms: basements, cellars, bathrooms.

For these purposes, mainly halogen lamps with an operating voltage of 12V are currently used. The power of such lamps is provided through electronic transformers, the internal structure of which will be discussed a little later. In the meantime, a few words about the regular use of these devices.

Externally, the electronic transformer is a small metal or plastic box, from which 4 wires come out: two input with the inscription ~ 220V, and two output ~ 12V ...

Electroconvectors Bravo, Roda SORGE, advantages and disadvantages of convectors, fan heaters, carbon and halogen household heaters.

Despite the fact that the principle of convectors is the same, many models have their own distinctive features. Consider these features on the example of several models of the company RODA. The control of these convectors is electronic, there is an LCD display. These convectors have the following distinctive features that expand the functionality.

In addition to the BRAVO series, RODA also produces convectors in several more series. The simplest is the Roda STANDARD series. These convectors have an electromechanical thermostat, power, depending on the model, is 0.5 - 2.0 kW, they are designed for installation not on the wall ...

Dimmers (dimmers for controlling light) is a miniature device that is installed instead of the usual, standard mechanical switch, which allows you to smoothly adjust the brightness of artificial lighting.

The first, a mechanical dimmer, was invented in the 1890s to slowly darken theater lighting. The superiority of this invention belongs to the inventor - self-taught, an ardent fan of Melpomene from the United States, Granville Woods.

All dimmers are designed to turn on / off the lighting and adjust its intensity. In addition, many models provide other useful features. For example automatic shutdown by timer, imitation of presence, smooth shutdown, remote control ...

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 ...