Somewhere recentlyIread an article on the use of a knife with a "heel" from the company KVT. I did not see such a knife myself, but I liked the idea of ​​opening wires and cables without damaging the insulation. Buying such a knife is probably not a cheap pleasure. I decided to make a homemade one.

BasisIused a blade from a clerical knife, subjecting it to a slight revision. First I cut the spike for attaching the heel, then I grinded off the extra sharpening, leaving only the edge sharpened. sharpened the opposite side of the blade.

ANDs a piece of the same blade, using a diamond microdisk and a drill, made a heel with a slot in the thickness of the blade. The heel was soldered to the blade with POS solder, orthophosphoric acid was used as a flux. The edges of the heel were wowed so that she would not “injure” the wires and insulation. Knife blade inserted in aluminum profile from the frame to the grid...

Many people who work in production, directly involved in the repair of electronic and electrical equipment, the situation is familiar, we can even say it’s familiar and ordinary: the old equipment works, but the electrical circuits for it have already become worthless, or simply lost. Of course, there is nothing to be done in the second case, and we will consider the first case in this article.

The author of this article was prompted by the fact that he had to do a similar operation recently to restore the circuit of the electrical principle memory module of the MCTS controller. And so, what is called, in hot pursuit, until I forgot how to do it, it was decided to share with all this experience. If at least someone comes in handy, then the article can be considered useful. But, first, a little about what the MCTC controller is, because not everyone probably knows what it is. This controller was produced by the Smolensk association "PC PROLOGUE", and was intended for automated ...

Is it possible to repair purchased LED lamps? This question, given the high cost of the lamps, is quite relevant, a lot has already been written on this topic in Internet forums. The most frequently discussed issues are the repair of lamps purchased at Aliexpress.

In the article “Shopping on Aliexpress - personal shopping experience in a Chinese online store”, among other things, it was told about the purchase of LED lamps that are so popular recently. Actually, the article started with these lamps: the quality of these lamps left much to be desired, mostly attracted by the low price. But in some places where too much light is not required, these lamps came in handy. Further exploitation revealed that these lamps are not as durable as promised in the advertisement. If the lamps of the brand "Navigator" with the author of the article have been working without fail for almost two years, then the lamps purchased at "Aliexpress" fail ...

How to connect the generator to the house? It would seem that it could be easier, started the generator, connected to the house and everything, we live as before))). But not everything is as simple as it seems at first glance. In this article I would like to talk about how our people, wanting to save a little on materials, the work of qualified specialists, manage to connect gasoline and diesel generators.

So, having recently been “visiting” with one of his comrades who, according to him, worked for many years as a ship electrician and knows everything about electricity, including Ohm’s law :) ...

So, the reason for the visit was that the gasoline generator refuses to give out vital 220 V. At the first inspection of the "client", that is, the generator of the adjacent electrical household, the reason for the failure became clear - the automatic voltage regulator unit has failed ...

Online shopping now does not surprise anyone. Everything is very simple: just select and order the goods, pay in any way possible and patiently wait for it to be sent by mail. One of these stores, of course, can be considered Chinese Aliexpress. Here, buyers are attracted to a lot: a variety of goods, low prices, a system of discounts on goods, free delivery and a huge number of sellers. Therefore, the same product can be bought at different prices.

Before becoming a full customer, you must register. The registration procedure is quite simple and free. We won’t write about it here, because a lot of detail has been written about this on the Internet, in addition, there are enough videos on this topic on YouTube. The author of the article would like to talk about his generally poor shopping experience, share his impressions of goods and services. For some reason, the very first purchases were LED lamps of different styles and different capacities ...

For laying hidden communications in the room, in particular wiring, it is often necessary to make a groove in the wall, or, to put it more closely to the topic, choose a strobe. This process is conveniently carried out using a tool specially designed for this purpose - a chipper.

The shtroborez is similar to a grinder and at the same time like a hand-held circular saw, however, cutting is done here with two diamond blades with the ability to adjust both the depth of cut and its width. The result is an even stroba, a groove with perfectly even side walls, which can hardly be achieved using a grinder, and the working time is halved compared to a grinder, because two cutting discs work simultaneously with a stroborez. How to choose a chipper if it is necessary to carry out the appropriate work? Fact that various works require...

The choice of welding household appliances is huge. In this article I will talk about the Resant 250 inverter type welding machine, why this particular model is what is good and what is not. I do not regret the choice made, I can say about it right away. In the kit, as a gift, a welder's helmet, I bought electrodes separately.

Advantages of the welding machine. The range of currents and applicable electrode diameters (up to 5 mm) allows you to perform welding work at a professional level (with the exception of volumes, since there are limitations in continuous operation). Good protection, smooth adjustment, low weight and proper layout of the connections allows you to work in hard to reach places. Excellent cable insulation, very rigid holder springs and negative terminals, reliable cooling, the ability to work at sub-zero temperatures (minus 8 - no problem) ...

Premises that are located below the zero level of the basement of the building are called basements. They are surrounded on all sides by earth, which provides relative temperature stability throughout the year and, as a rule, are deprived of natural light.

Basement operating conditions are associated with increased humidity. It arises as a result of: the proximity of groundwater and the technical difficulties of creating building structures that are tight on all sides, condensation from the air coming from the street into the room when it is cooled.

The applied measures to combat humidity, based on the removal of groundwater, ventilation, the use of exhaust or fresh ventilation systems are not always effective.They partially increase air dryness. Therefore, basements are classified as premises ...