A home foreman, who started repairing or making electrical wiring for his premises, always faces the issue of protecting his electrical equipment from preventing the development of possible emergency situations in it. Automatic switches that provide three functions allow this problem to be solved: convenient manual switching of connected circuits with power sources, reliable transmission of the load current in operating mode, protective automatic shutdown in the event of an accident.

It is no secret that any such device is created by the manufacturer to provide certain technical capabilities and has various characteristics. Therefore, there are a lot of such designs and for each particular workplace it is necessary to select the optimal machine. Well, now let's move on to the selection rules, dividing them into nine consecutive stages. A circuit breaker is usually installed inside ...

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...

In 2010, two Apple immigrants, Americans Matt Rogers and Tony Fadell, founded Nest Labs, and in 2011 their business was so successful that in the United States a truly new era began in the organization of home climate control. Then the European market segment was mastered. In 2014, Nest Labs was bought by the giant Google for $ 3.2 billion, which did not slow down the development of the original direction, but only accelerated it.

The first model of the Nest smart thermostat was introduced to the consumer at the end of 2011, and immediately made a splash. The following year, the second modification of the device was released, it had an updated design and expanded functionality, and it was the second model that became the key product of Nest. So, the Nest thermostat is a stylish smart gadget designed to automate and optimize all the processes in the room associated with maintaining ...

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 ...

Generators have firmly entered the lives of ordinary people. In order to operate the generator safely, a few simple rules should be followed. With the onset of winter or with a regular power outage, people rush to purchase a mini-power station. For many, this is the first experience of operating a generator.

Take a few minutes to make sure your generator is ready for operation. Check the level of oil and fuel in your generator, and if a long-term blackout is expected, replenish the fuel and supplies - filter, spark plugs, oil. There are also several important safety instructions that we recommend that you observe while the generator is running.

To avoid carbon monoxide poisoning (carbon monoxide): Always use generators outdoors, away from doors, windows and air vents. Never start generators in houses, garages ...

How much power should the generator take? How to install it? Where to connect it? What can be connected to an electric generator? ... In this article we have collected the 10 most popular questions and tried to answer them in a simple, understandable language. We hope that the answers to them will help you in choosing an electric generator. Here are 10 basic questions regarding the generator and the answers to them.

How powerful generator should I get? The estimated power of the generator depends on the amount of electrical loads that you want to use simultaneously. Power is measured in watts (watts). First, add up all the loads that you intend to use at the same time. Then, as a precaution, find out which household electrical appliances in your house can have large inrush currents (refrigerators, air conditioners, pumps) Add all this to the total. The fact is that some appliances, such as air conditioning, refrigerators, pumps ...

Now many people, starting the construction of housing, immediately face the issue of its power supply. Even the very first action - the construction of the foundation requires the use of a concrete mixer, which does not work without electricity. Therefore, you have to look for options for creating a temporary power point and choose the most suitable method.

In order for the work progress not to be disrupted, and all the tools to work well, it is necessary to have electrical energy that is different: in quality, ensuring the rated frequency and voltage parameters for good operability of building mechanisms, reliability and stability, eliminating power failure during work, and safety of use, creating maximum protection of people from electric injuries. In this case, it will be necessary to resolve legislative issues related to connecting to existing energy pipelines ...

Do you want to master the modern field of electronics and learn how to program microcontrollers? There is everything to start developing your own electronic devices on microcontrollers yourself - the author’s video course "Programming Microcontrollers for Beginners".

Who is this course for? First of all, I created it for beginners, for those who are already familiar with the basics of electronics and programming, who know basic electronic components, assemble simple circuits, know how to hold a soldering iron and want to go to a whole new level, but constantly postpones this transition because difficulties in mastering new material.

The course is perfect for those who have just recently made their first attempts to learn microcontroller programming, but are ready to give up everything because it doesn’t work or works, but not as it needs to (is it familiar ?!). The course will be useful to those who are already collecting ...