As often happens, everything turned out quite by accident. A friend asked me to deal with the high power consumption of garden lighting in a country house and its reliability. If necessary, I asked to put a separate voltage regulator for lighting, since the mains voltage is unstable and often low.

About a year ago, an acquaintance already began the struggle for energy savings. He replaced incandescent lamps in garden lights with compact fluorescent energy-saving lamps. The energy savings turned out to be significant when compact fluorescent lamps were installed instead of 21 pieces of conventional 60-100 W lamps. The company did not stint and put "OSRAM" 24 watts. The homeowner arranged a saving result. But over time, the disadvantages of the new lamps became noticeable. For example, a base with electronics for an energy-saving lamp ...

Favorite backlit magnifier honestly worked for almost a year and a half and died. Quiet cotton, light smoke, a peculiar smell - and silence. The electronic ballast burned out. With this electronic ballast is not so simple. I connected a functioning electronic ballast from a compact 11W fluorescent lamp (one lamp directly, the second through an additional inductor parallel to the one installed).

Only one burns. Inconveniently. Have to watch CFL. Inside the Chinese design are two 137 mm fluorescent noname lamps with a G23 socket.

Wikipedia: “The G23 lamp is a double folded tube. A starter is located inside the base; only an electromagnetic inductor is needed to start the lamp. Available at a power of 5 to 14 watts. The main application is table lamps, but they are often found in fixtures for showers and bathrooms ”...

I suggest that you familiarize yourself with the design of a welding transformer for mounting junction boxes. I have been using this transformer for a long time, but finally I decided to improve it a bit and make it more convenient to use. To do this, he returned the transformer to its original state and started working, fixing it in the photo.

So, I have a toroidal transformer from LATR, P = 1.0 kw. As a secondary winding, one core of a multicore cable KVNG 4x35mm.q. Was taken, from which the "native" insulation was removed and two layers of cotton tape were applied. The total diameter of the wire is significantly reduced, and the quality of the insulation remains acceptable. This was done due to the small window of the torus. The secondary winding is wound until the window is full. Output voltage = 15.6 v. For reliability, the winding is fixed with a silicone ring ...

Probably everyone saw the usual mechanical valve. It is enough in any courtyard of an apartment building to look at the heating main to see at least two gate valves at once.

Even without going into much of their design, and having no higher technical education, it is easy to understand that if you turn the handwheel, a shutter moves inside the pipe, which blocks the flow of water. It is from this that such a mechanism of pipe-and-valve valves “moves” and is called the “valve”. The device of a small mechanical valve is shown in the figure.

The use of such "manual" valves is justified only in those cases when the valve is used very rarely, from case to case, and their number is small. For example, block the pipeline section in the event of an accident. Well, a distribution pipe or riser flowed somewhere in the basement of the house ...

You can make an excellent LED spotlight with your own hands, spending only 257 rubles on the filling! Even if you are not familiar with electronics and in life you have not soldered a single printed circuit board with radio components!

This spotlight can be successfully used for landscape illumination of a summer cottage, for accented illumination of a house, for illumination of an object at a distance of 20 - 30 m when using outdoor surveillance cameras ... And much more for what!

But, most importantly, your spotlight will consume only 6 watts of electric power with a stable light output when powered in the voltage range 85 - 256 Volts! Let's get down to business. We really liked the Kreonix STD-JCDR-6W-GU10-COB / WW LED lamp, developed by Russian engineers and manufactured by Kreonix. We tested it and were very pleased with the high brightness of the LED ...

A cooker hood is an integral element of a kitchen interior. A range hood provides a comfortable stay for people in the room, clearing the air of unwanted odors and burning. If you need to connect a cooker hood, a lot of questions arise, one of which is how to connect a cooker hood to an electrical network.

The connection of the hood is carried out, as a rule, in a conventional power outlet. Therefore, it is recommended to provide a socket for connecting the hood when performing work to replace the electrical wiring of the apartment. Consider the features of installing a socket for a kitchen hood.

The power consumption of the cooker hood is relatively small, so it is not practical to pull a separate wiring line from the distribution panel. The outlet in this case can be connected in a junction box. If during the installation of wiring in the kitchen ...

This article is intended for those who want to connect the gas generator to the ABP unit without assistance. But, before you start connecting the generator to the automation, you need to know a little about the device and the principle of operation of the generator.

There is no sense in thoroughly understanding the device and the principle of operation of mini-power plants, this information on the Internet is more than enough, we just need to understand how the generator works, where you need to connect the control wires from the autostart system. That is, only practical information, without unnecessary theory and "water."

This method of connecting the generator is suitable for most single-cylinder generators up to 5-6 kW equipped with an electric starter. So, for starters, consider how a gas generator starts up. Close the air damper before starting the engine., turn the ignition key to the "START" position. After the generator engine wound up ...

The manufacturer of the optimizer for the load on the electric network OEL-820 was contacted by an electrician serving the cottage village, and ordered a whole box of OEL-820. After some time, managers called back the buyer to find out how he operates the devices. And it was curious why he needed so many optimizers?

It turned out this. In the holiday village there is an old high-voltage transformer KTP, whose power is limited. Therefore, in the spring, autumn and winter, when energy-intensive electric heating appliances and water heaters were turned on in the houses, the total power consumption increased, and the voltage in the village electric network dropped. When turning on electric kettles and submersible borehole pumps with a high starting current, the voltage sagged still, albeit briefly. The situation was aggravated by the fact that the wiring in the houses is old, with insufficient cross-section ...