If you are reading this article, then you have probably already seen the convenience of using a portable generator. It doesn’t matter where you use it - outdoors to power small appliances or at home, as a backup source of electricity. But are you sure that the generator will work reliably exactly when you need it?

Maintenance is a very important part of operating an electric generator. Incorrect storage of a gasoline, diesel or gas generator can lead to difficult starting and improper operation of the generator engine. So, here are a few recommendations for maintaining the generator, following which you can be sure that the generator will start when you need it! The generator engine, like any other engine, requires timely maintenance, one of the main points of which is ...

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 familiar and ordinary: the old equipment is working, 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 ...

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 also suitable for those who have just recently made their first attempts to study microcontroller programming, but are ready to give up everything from the fact that nothing works or works for him, but not as he needs (he knows ?!). The course will be useful to those who are already collecting ...

“The solar battery can be glued to anything from portable power supplies for gadgets to smart clothes and even autonomous space suits of astronauts,” said Xiaolin Zheng, an article published in Scientific Reports.

The combination of thin-film electronics with new solar panels will open up opportunities for the creation of new technical devices, and this is only the first stage in the development of this technology. The technology “tear off and decal” can be used completely versatile, assured the head of the team of physicists at Stanford University Xiaolin Zheng.

Zheng with like-minded people developed and reproduced real solar-battery stickers, which were the result of experiments with films of silicon oxide and nickel of nanometer thickness. Scientists explain that solar panels can traditionally work fine ...

At first glance, the winding is a piece of wire wound in a certain way and there is nothing much to break in it. But it has features: strict selection of homogeneous material along the entire length, accurate calibration of the shape and cross section, application of a varnish layer with high insulating properties in the factory, strong contact joints. If at any point in the wire any of these requirements is violated, the conditions for the passage of electric current change and the engine starts to work with reduced power or stops altogether.

To test one winding of a three-phase motor, disconnect it from other circuits. In all electric motors, they can be assembled according to one of two schemes: a star and a triangle. The ends of the windings are usually output to the terminal blocks and are marked with the letters "H" (beginning) and "K" (end). Sometimes individual compounds can be hidden ...

In our daily lives, we constantly encounter various electrical devices that greatly facilitate our activities. Almost all of them have in their design an engine powered by electricity to perform a certain job. Sometimes, for various reasons, malfunctions arise in it. It is necessary to determine its performance, to identify and repair damage.

Immediately make a reservation that we will not resort to complex technical descriptions and formulas, but try to use simplified schemes and terminology. We also take into account that working with electric motors in electrical installations is dangerous. They are allowed trained, trained personnel. By mechanical design, any electric motor can be imaginedconsisting of only two parts: stationary fixed, which is called a statorand attached to the machine body...

University of Washington engineers have developed a technology that allows you to use Wi-Fi as an energy source to power portable devices and charge gadgets. The technology has already been recognized by Popular Science magazine as one of the best innovations of 2015.

The ubiquitous adoption of wireless data technology has revolutionized itself, and now it’s the turn of wireless power transmission over the air, which developers at the University of Washington called PoWiFi (from Power Over WiFi).

At the testing stage, the researchers were able to successfully charge small-capacity lithium-ion and nickel-metal hydride batteries using the Asus RT-AC68U router and several sensors located at a distance of 8.5 meters from it. These sensors just convert energy ...

The term "spotlight" explains the explanatory dictionary of the Russian language as a lighting device, consisting of a system of mirrors or optical lenses, designed to create a strong stream of directional light focused in a limited angle.

It has a great blinding effect and, when installed on vehicles, it must be switched off when the oncoming stream is much earlier than the main beam headlights. Such structures are practically not used to illuminate the entrance to buildings.

Over the past two decades, streetlights have come to be called ordinary street lamps, illuminating the territory at a wide angle and having a power of 50, 20 and even 10 watts. They are equipped with economical LED sources, motion and light sensors. In most cases, they are already factory-installed and prepared for joint work. It is enough for the end user to connect power wires to them ... 

In a private house, pumping equipment is used to ensure the operability of the heating system, water supply system. In the heating system, a circulation pump ensures the circulation of the coolant from the boiler through pipelines and radiators connected to them throughout the house.

In the absence of a centralized water supply, water is supplied to the house by pumping it out by a submersible or surface pump from a well or a well. That is, we can conclude that pumping equipment is an integral element of these communications of a private house.

Pumping equipment receives power from the electrical network, so in the event of a power outage the house will be left without the necessary communications for life: the coolant will not circulate through the heating system, and there will be no water in the tap ...