When the question arises of the choice of a welding machine, the eyes run up from all sorts of options and models. How to choose exactly what you need?

Let's see what's inside the welding machine. We will focus on electric welding, as there are gas welding machines, but for domestic needs and gardening with a cottage, an electric welding machine is best.

Electric welding machines are made on the basis of a step-down transformer with a broken magnetic circuit, in them the regulation of the welding current is achieved by adjusting the gap in the magnetic core of the transformer ...

You connected your mobile phone to the charger and, having inserted it into the socket, you found out that the battery is not charging. There may be many reasons, but most often it is:

1. BAD CONTACT between the plug and the connector - the socket may be loose (due to the “careful” handling of the phone) or its contacts are dirty.

This is a very common reason! It is enough to wipe the contacts of the charging connector with a piece of bandage soaked in PURE ALCOHOL (you can buy at the pharmacy) when the battery is pulled out of the phone, DO NOT under any circumstances use solvents, etc. active substances ...

Classification and practical experience of electrical wiring protection systems

Automatic machines or circuit breakers, this is what replaced the usual traffic jams, i.e. fuses in a ceramic case, where a blown wire was a protection against overcurrent.

Unlike plugs, automatic reusable devices and protection functions are separate. Firstly, overcurrent protection, and secondly, overload protection, i.e. the mechanism of the machine breaks the load circuit with a slight excess of the operating current of the machine. In accordance with these functions, the machine contains two types of circuit breakers. Magnetic fast-acting circuit breaker for short-circuit protection ...

Modern methods of zoning and floor plans can no longer do with just one chandelier. Now there are many ways to divide a room into zones, including the use of spotlights.

Spotlights are screwed into the ceiling panels. This method of zoning has long ceased to be an innovation, and in Europe it is already a common thing in the interior.

Spotlights calculated on the voltage 220 andwhether 12 volt. To connect low-voltage lamps, you must use a special transformer. To extend the lamp life use electronic soft starters ...

Everyone who has a cat knows that these animals are distinguished by both individual character and a variety of quirks and whims.

One of the most dangerous quirks is the desire of cats to chew, bite, catch cords and wires, especially thin wires leading to modern household appliances.

Avoiding this behavior is challenging, requiring both ingenuity and perseverance. And the question here is not so much about the safety of household appliances, but about how to avoid the terrible consequences of an electric shock of your overly playful pet.

Just as parents make a house safe for their child, so cat owners should think about how to protect the house for the cat and from the cat ...

The article discusses one of the possible solutions to the problem with not very high-quality voltage produced by many household generators.

Many who faced the need to use gas or diesel generators during a power outage probably noticed that some devices do not work from electricity generated by the generator.

We received a letter from our regular reader on our site, here is a quote from this letter: ....... "Household generators are mainly brush-mounted, therefore the quality of the generated electricity, to put it mildly, does not correspond to the powered devices. In particular, computer UPSA, when switching to autonomous power, begins to "swear." Are there any filters that make the sine wave more digestible? "" .......

The problem with electricity in our homes has become, unfortunately, already commonplace. They can turn off electricity quite unexpectedly, without any warning. And imagine such a situation ... Winter. On the street, frost is under - 20, you go home, the snow crunches under your feet ... Come home, and there ... it's dark, the house is cool, uncomfortable ...

In this short article we will try to figure out how to avoid situations, so as not to be left without heat, so that your boiler functions at five plus.

If you are the lucky owners of a private house, to ensure uninterrupted power to the heating system, you can between the UPS on batteries and the gas or diesel generator. You decide. Consider the advantages and disadvantages of these alternative sources of electrical energy for autonomous power supply at home.Let's start with Uninterruptible Power Supply (UPS) ...

X10 is a widely used standard in home automation.

X10 defines the method and protocol for transmitting control command signals (“turn on”, “turn off”, “brighter”, “darker”, etc.) by power wiring to electronic modules to which controlled household and lighting devices are connected.

In total, up to 256 groups of devices with different addresses can be connected to the X10 network.

From the point of view of the logic of X10 network organization, all devices can be divided into two large groups: controllers and executive modules.

The controllers are responsible for the generation of X10 commands and, in addition to manual push-button control, can have a built-in timer or a specialized input device for external exposure (light sensor, infrared photo detector from a remote control, etc.) ...