The cordless screwdriver is lightweight, small in size, does not require a network connection, which allows you to work with it in any conditions. But the trouble is that the battery capacity is small, and after 30 to 40 minutes of intensive work, you have to put the battery on charge for at least 3 to 4 hours.

In addition, batteries tend to become unusable, especially when they do not use a screwdriver regularly: they hang a carpet, curtains, paintings and put it in a box. After a year, they decided to screw on a plastic baseboard, and the screwdriver does not “pull”, charging the battery helps a little.

A new battery is expensive, and not always on sale you can immediately find exactly what you need. In either case, there is only one way out - to power the screwdriver from the mains through the power supply ...

This article has a somewhat provocative title. I am sure that there will immediately be people who will instructively write, saying that twisting is illegal and according to the PUE, twisting of wires is prohibited.

Nobody argues with this. If not for the fact that, in spite of everything that is written in the EMP, the vast majority of wire connections in the territory of the former large Soviet country are still twisted.

I will not argue that a very good twist of wires is the most reliable and high-quality way to connect wires, although they constantly try to prove it to me. We will simply proceed from the fact that good twisting can be called one of the stages and a very important element of such methods of connecting wires, such as soldering or welding ...

For any layman in our country, the concept of energy conservation is an energy-saving light bulb and, at best (if you have a technical background), smart home electrical appliances. Basically, most people, with energy conservation issues, are faced precisely in these areas of their life (if the housing system does not work).

For the average person who does not need to delve into problems of a national scale, participation in the government’s energy conservation program means replacing the old Illich lamp with an energy-saving lamp. But energy-saving lamps, today are tens of times more expensive, but people still buy, because according to Law 261-f3 from 2012. incandescent lamps in our country will not be produced ...

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 ...

Today, there is a huge number of a wide variety of household appliances, which are equipped with more and more intelligent electronics every year, are reduced in size, change their design, shape and color.

But nevertheless, despite this, one thing has remained unchanged for many years: today, as before, the stable operation of electrical equipment is completely dependent on the quality of electricity.

How many troubles did sharp dips and peak surges in mains voltage do in everyday life and in production? Workshop workers and firefighters know best about this. Is it possible to minimize the number of failures of household appliances and equipment due to unstable voltage? It turns out you can ...

Often there are situations when you plug into an electrical outlet, and you hear crackling from it, smoke is coming in or the outlet is just very loose. In such cases, repairs are needed. If you want to do this yourself, you will need: a flat and Phillips screwdriver, pliers, electrical tape and indicator.

Before starting any work, it is necessary to turn off all the machines, switches on the meter (they should have the inscriptions "ON" "OFF", or "ON" "OFF", switch to "OFF" "OFF") and unscrew all the fuses, this it must be done very carefully so that no live parts can rush about. As soon as we de-energize everything, we need to check on the outlet that we will repair, the presence of voltage, using the indicator ...

The article discusses various types of electric motors, their advantages and disadvantages, development prospects.

Electric motors, at present, are an indispensable component of any production. In utilities and in everyday life, they are also used very often. For example, these are fans, air conditioners, pumps for heating, etc. Therefore, a modern electrician needs to be well versed in the types and design of these units.

DC motors. This type of motor was previously used very widely, but at present it is almost completely replaced by asynchronous electric motors, due to the comparative cheapness of the application of the latter. A new direction in the development of DC motors are DC valve motors with a permanent magnet armature ...

Electricity is a source of energy, and benefits until it gets out of control. Having escaped to freedom, it can create many troubles, the main of which is a fire.

The main cause of fire hazard situations is faulty wiring. It is necessary to monitor the state of insulation of wires and cables, in time to replace damaged ones. Also a big danger in the fire plan is the old wiring, made "under King Gorokh." Over time, the insulation of such wires simply dries up, cracks and crumbles, which can lead to a short circuit and fire in the premises. The old wiring was carried out by wires, the insulation quality of which was much lower than that of modern ...